在2020年初全球進入新冠大流行危機，為了遏止疫情擴散，政府下令禁止社區關懷據點的各項群聚性社交照護活動，許多高齡者減少外出機會、社交聚會、走路運動，導致快速老化與健康問題。本研究探究臺北市高齡者身體、心理及社會衰弱程度之現況，以社會生態系統為研究視角，分析高齡者疫情焦慮受到社會環境因素、物理環境因素之影響情形，進而探討在高齡者身體衰弱、心理衰弱、社會衰弱三種衰弱模型對其調節影響之比較，以2019年至2021年歷經新冠疫情且居住於臺北市12行政區之65歲以上高齡者為研究對象，透過分層抽樣來抽取樣本，因正逢疫情高峰期，限於政府防疫政策，故以線上及實體紙本問卷發放，收回460筆資料，以剔餘之392筆資料進行描述性統計、相關係數分析及結構方程式分析。根據結果所示，在疫情期間，當臺北市高齡者的身體衰弱、心理衰弱、社會衰弱程度越高，其疫情焦慮感則會越深。在社會環境因素之「社會參與度」中，當臺北市高齡者越消極參與社會團體活動，其越傾向展現越強烈的疫情焦慮感；在物理環境因素之「鄰里生活品質」中，當臺北市高齡者感知到鄰里生活品質越優質，其越傾向展現越溫和的疫情焦慮感。本研究除了探討探索高齡者疫情焦慮受到社會環境因素、物理環境因素之影響情形，也進一步探討其受到身體衰弱、心理衰弱和社會衰弱之調節效果，並且發現到當高齡者的身體衰弱程度愈高，他越願意參與社會團體活動的情況下，容易展現出較高的疫情焦慮。當高齡者的身體、心理及社會衰弱程度愈高，他所處的鄰里生活品質越優質的情況下，容易展現出較高的疫情焦慮。透過社會生態學觀點能提供健康行為更廣泛的瞭解與探索，並且能適切地反映出改變物理環境與社會環境影響個人健康行為的效果，以期提早發現心理或社會面向較不健康之高齡衰弱者，並及早進行介入，未來如再發生類似的疫情事件能給予社區高齡者更合適的照顧與關懷。

In early 2020, the global COVID-19 pandemic was declared. Most activities in community centers declined as a countermeasure against the spread of COVID-19. Many older community dwellers reduced the extent of their social activities and daily exercise, causing rapid aging and health problems. We investigated the physical, psychological, and social frailty of older community dwellers in Taipei City during the pandemic. Using the social-ecological model, we explored the impact of social and physical environmental factors on coronavirus-related anxiety in our participants. We also compared models to better explore this issue, using physical, psychological, and social frailty as moderators. Using stratified sampling, we recruited 392 participants aged over 65 years who were living within 12 administrative districts of Taipei City during the pandemic (2019–2021). We distributed questionnaires both online and in hardcopy because the collection period included the peak of the pandemic and was subject to the government’s epidemic prevention policy. Data were analyzed using descriptive statistics, correlation coefficients, and structural equation modeling. We found that during the pandemic, the greater the participants’ physical, psychological, and social frailty, the deeper their coronavirus-related anxiety was. The less they participated in social activities, the greater their anxiety; conversely, the better their perceived quality of life in their neighborhood, the lower their anxiety. We also found that the greater their frailty and the less willing they were to participate in social activities, the greater was their anxiety. When they perceived the quality of life in their neighborhood to be poorer, their anxiety was greater. Social-ecology–based perspectives can provide a broader understanding of health behaviors and explain the effects of changing one’s physical and social environment on one’s health behaviors. This enables earlier detection of and intervention to help psychologically or socially unhealthy older community dwellers. If similar epidemics occur in the future, this approach would facilitate more appropriate care for older community dwellers.

王靜怡、陳惠雅、胡名霞 (2012)。社區預防性復健照護的物理治療服務。臺灣醫學，16(6)，606–615。https://doi.org/10.6320/FJM.2012.16(6).05。
江勁政、簡乃卉、衛沛文、遊靜宜、張淑紅 (2020)。社區中高齡者身體表現與衰弱前期危險因數之特徵。華人運動生物力學期刊，17(2)，11–19。https://doi.org/ 10.3966/207332672020091702002。
張淑芳(2014)。老年肌少症之診斷與治療。護理雜誌，61(2)，101-105。https://doi.org/10.6224/JN.61.2.101。
陳俐君、廖禦圻、胡芳文 (2021)。高齡者認知衰弱之概念分析。護理雜誌，68(5)，92–99。https://doi.org/10.6224/JN.202110_68(5).12。
陳淑貞、錢桂玉、呂佳育 (2015)。走路速度測量於社區高齡者衰弱防治之應用。運動生理暨體能學報，21，51–58。https://doi.org/10.6127/JEPF.2015.21.05。
陳喬男 (2015)。高齡者的失能預防。長期照護雜誌，19(2)，149–155。https://doi.org/ 10.6317/LTC.19.149。
陳慶餘 (2015)。臺灣年老衰弱症的研究與應用。長期照護雜誌，19(2)，137–148。https://doi.org/10.6317/LTC.19.137。
臺北市政府社會局 (2021年11月10日)。臺北市政府社會局老人人口數統計。統計資料。https://dosw.gov.taipei/News_Content.aspx?n=27AAE5ED6FF97B25&s=F2845354 E457EE98
衛生福利部長期照顧司 (2017年11月14日)。長照十年計畫2.0 ── 建立我國社區整體照顧模式，佈建綿密照顧網 。長期照顧司。http://1966.gov.tw/LTC/cp-5200-42415-201.html
Adams, E. J., & Sherar, L. B. (2018). Community perceptions of the implementation and impact of an intervention to improve the neighbourhood physical environment to promote walking for transport: a qualitative study. BMC Public Health, 18(1), 714. https://doi.org/10.1186/s12889-018-5619-y
Allen, K. A., Vella-Brodrick, D., & Waters, L. (2016). Fostering school belonging in secondary schools using a socio-ecological framework. The Educational and Developmental Psychologist, 33(1), 97–121. https://doi.org/10.1017/edp.2016.5
Andrew, M. K., & Keefe, J. M. (2014). Social vulnerability from a social ecology perspective: a cohort study of older adults from the national population health survey of Canada. BMC Geriatrics, 14(1), 1–14. https://doi.org/10.1186/1471-2318-14-90
Annear, M., Keeling, S., Wilkinson, T., Cushman, G., Gidlow, B., & Hopkins, H. (2014). Environmental influences on healthy and active ageing: a systematic review. Ageing & Society, 34(4), 590–622. https://doi.org/10.1017/S0144686X1200116X
Aprahamian, I., & Cesari, M. (2020). Geriatric syndromes and SARS-COV-2: more than just being old. The Journal of Frailty & Aging, 9(3), 1–3. https://doi.org/10.14283/jfa.2020.17
Arai, H., Ouchi, Y., Yokode, M., Ito, H., Uematsu, H., Eto, F., Oshima, S., Ota, K., Saito, Y., Sasaki, H., Tsubota, K., Fukuyama, H., Honda, Y., Iguchi, A., Toba, K., Hosoi, T., Kita, T., & Members of Subcommittee for Aging. (2012). Toward the realization of a better aged society: messages from gerontology and geriatrics. Geriatrics & Gerontology International, 12(1), 16–22. https://doi.org/10.1111/j.1447-0594.2011.00776.x
Aranda, M. P., Ray, L. A., Snih, S. A., Ottenbacher, K. J., & Markides, K. S. (2011). The protective effect of neighborhood composition on increasing frailty among older Mexican Americans: a barrio advantage? Journal of Aging and Health, 23(7), 1189–1217. https://doi.org/10.1177/0898264311421961
Aubertin-Leheudre, M., & Rolland, Y. (2020). The importance of physical activity to care for frail older adults during the COVID-19 pandemic. Journal of the American Medical Directors Association, 21(7), 973–976. https://doi.org/10.1016/j.jamda.2020.04.022
Bagshaw, S. M., Stelfox, H. T., McDermid, R. C., Rolfson, D. B., Tsuyuki, R. T., Baig, N., Artiuch, B., Ibrahim, Q., Stollery, D. E., Rokosh, E., & Majumdar, S. R. (2014). Association between frailty and short- and long-term outcomes among critically ill patients: a multicentre prospective cohort study. CMAJ: Canadian Medical Association Journal = Journal de l’Association Medicale Canadienne, 186(2), 95-102. https://doi.org/10.1503/cmaj.130639
Baker, K. F., Hanrath, A. T., Loeff, I. S. van der, Tee, S. A., Capstick, R., Marchitelli, G., Li, A., Barr, A., Eid, A., Ahmed, S., Bajwa, D., Mohammed, O., Alderson, N., Lendrem, C., Lendrem, D., Group, C.-19 C., Group, C.-19 C., Pareja-Cebrian, L., Welch, A., … Duncan, C. J. A. (2020). COVID-19 management in a UK NHS foundation trust with a high consequence infectious diseases centre: a retrospective analysis. Medical sciences, 9(1), 6. https://doi.org/10.1101/2020.05.14.20100834
Bales, C. W., & Ritchie, C. S. (2002). Sarcopenia, weight loss, and nutritional frailty in the elderly. Annual Review of Nutrition, 22, 309–323. https://doi.org/10.1146/annurev.nutr.22.010402.102715
Ball, K., Timperio, A. F., & Crawford, D. A. (2006). Understanding environmental influences on nutrition and physical activity behaviors: where should we look and what should we count? The International Journal of Behavioral Nutrition and Physical Activity, 3, 33. https://doi.org/10.1186/1479-5868-3-33
Bandeen-Roche, K., Xue, Q.-L., Ferrucci, L., Walston, J., Guralnik, J. M., Chaves, P., Zeger, S. L., & Fried, L. P. (2006). Phenotype of frailty: characterization in the women’s health and aging studies. The Journals of Gerontology: Series A, 61(3), 262–266. https://doi.org/10.1093/gerona/61.3.262
Bandura, A., & Walters, R. H. (1977). Social learning theory (Vol. 1). Prentice Hall.
Banerjee, D., & Rai, M. (2020). Social isolation in Covid-19: the impact of loneliness. International Journal of Social Psychiatry, 66(6), 525–527. https://doi.org/10.1177/0020764020922269
Barber, S., Hickson, D. A., Kawachi, I., Subramanian, S. V., & Earls, F. (2016). Neighborhood disadvantage and cumulative biological risk among a socioeconomically diverse sample of african american adults: an examination in the Jackson heart study. Journal of Racial and Ethnic Health Disparities, 3(3), 444–456. https://doi.org/10.1007/s40615-015-0157-0
Barker, R. G. (1968). Ecological psychology: concepts and methods for studying the environment of human behavior. Stanford University Press.
Barnes-Mauthe, M., Arita, S., Allen, S., Gray, S., & Leung, P. (2013). The influence of ethnic diversity on social network structure in a common-pool resource system: implications for collaborative management. Ecology and Society, 18(1). https://doi.org/10.5751/ES-05295-180123
Bauman, A., Merom, D., Bull, F. C., Buchner, D. M., & Fiatarone Singh, M. A. (2016). Updating the evidence for physical activity: summative reviews of the epidemiological evidence, prevalence, and interventions to promote "active aging". The Gerontologist, 56(2), 268–280. https://doi.org/10.1093/geront/gnw031
Bellelli, G., Rebora, P., Valsecchi, M. G., Bonfanti, P., Citerio, G., & COVID-19 Monza Team members Stefania Galimberti Paolo Blangiardo Gabriella Maria Celora Valentina Deiana Nives Ghezzi Alice Marchegiani Julia Miksza Andrea Piazzoli. (2020). Frailty index predicts poor outcome in COVID-19 patients. Intensive Care Medicine, 46, 1634–1636. https://doi.org/10.1007/s00134-020-06087-2
Berg Weger, M., & Morley, J. E. (2020). Loneliness and social isolation in older adults during the COVID-19 pandemic: implications for gerontological social work. The Journal of Nutrition, Health & Aging, 24(5), 456–458. https://doi.org/10.1007/s12603-020-1366-8
Bernardo, A. B. I., Mendoza, N. B., Simon, P. D., Cunanan, A. L. P., Dizon, J. I. W. T., Tarroja, M. C. H., Ma. Balajadia-Alcala, A., & Saplala, J. E. G. (2022). Coronavirus pandemic anxiety scale (CPAS-11): development and initial validation. Current Psychology, 41(8), 5703–5711. https://doi.org/10.1007/s12144-020-01193-2
Best, A., Stokols, D., Green, L. W., Leischow, S., Holmes, B., & Buchholz, K. (2003). An integrative framework for community partnering to translate theory into effective health promotion strategy. American Journal of Health Promotion, 18(2), 168–176. https://doi.org/10.4278/0890-1171-18.2.168
Bettis, J., Kakkar, S., & Chan, C. D. (2020). Taking access to the community: an ecological systems framework for in-home counseling with older adults. Adultspan Journal, 19(1), 54–64. https://doi.org/10.1002/adsp.12087
Bilotta, C., Nicolini, P., Casè, A., Pina, G., Rossi, S., & Vergani, C. (2012). Frailty syndrome diagnosed according to the Study of Osteoporotic Fractures (SOF) criteria and adverse health outcomes among community-dwelling older outpatients in Italy. A one-year prospective cohort study. Archives of Gerontology and Geriatrics, 54(2), e23–e28. https://doi.org/10.1016/j.archger.2011.06.037
Blane, D., Higgs, P., Hyde, M., & Wiggins, R. D. (2004). Life course influences on quality of life in early old age. Social Science & Medicine, 58(11), 2171–2179.
Bonanad, C., García-Blas, S., Tarazona-Santabalbina, F., Sanchis, J., Bertomeu-González, V., Fácila, L., Ariza, A., Núñez, J., & Cordero, A. (2020). The effect of age on mortality in patients with COVID-19: a meta-analysis with 611,583 subjects. Journal of the American Medical Directors Association, 21(7), 915–918. https://doi.org/10.1016/j.jamda.2020.05.045
Boreskie, K. F., Hay, J. L., & Duhamel, T. A. (2020). Preventing frailty progression during the Covid-19 pandemic. The Journal of Frailty & Aging, 9(3), 130–131. https://doi.org/10.14283/jfa.2020.29
Bouillon, R., Marcocci, C., Carmeliet, G., Bikle, D., White, J. H., Dawson-Hughes, B., Lips, P., Munns, C. F., Lazaretti-Castro, M., Giustina, A., & Bilezikian, J. (2019). Skeletal and extraskeletal actions of vitamin D: current evidence and outstanding questions. Endocrine Reviews, 40(4), 1109–1151. https://doi.org/10.1210/er.2018-00126
Bowsher, J., Bramlett, M., Burnside, I. M., & Gueldner, S. H. (1993). Methodological considerations in the study of frail elderly people. Journal of Advanced Nursing, 18(6), 873–879. https://doi.org/10.1046/j.1365-2648.1993.18060873.x
Briguglio, M., Giorgino, R., Dell’Osso, B., Cesari, M., Porta, M., Lattanzio, F., Banfi, G., & Peretti, G. M. (2020). Consequences for the elderly after COVID-19 isolation: FEaR (Frail Elderly amid Restrictions). Frontiers in Psychology, 11, 2433. https://doi.org/10.3389/fpsyg.2020.565052
Brill, S. E., Jarvis, H. C., Ozcan, E., Burns, T. L. P., Warraich, R. A., Amani, L. J., Jaffer, A., Paget, S., Sivaramakrishnan, A., & Creer, D. D. (2020). COVID-19: a retrospective cohort study with focus on the over-80s and hospital-onset disease. BMC Medicine, 18(1), 194. https://doi.org/10.1186/s12916-020-01665-z
Brondizio, E. S., Ostrom, E., & Young, O. R. (2009). Connectivity and the governance of multilevel social-ecological systems: the role of social capital. Annual Review of Environment and Resources, 34(1), 253–278. https://doi.org/10.1146/annurev.environ.020708.100707
Bronfenbrenner, U. (1974). Developmental research, public policy, and the ecology of childhood. Child Development, 45(1), 1–5. https://doi.org/10.2307/1127743
Bronfenbrenner, U. (1977). Toward an experimental ecology of human development. American Psychologist, 32(7), 513. https://doi.org/10.1037/0003-066X.32.7.513
Bronfenbrenner, U. (2005). Making human beings human: bioecological perspectives on human development. Sage Publications Ltd.
Bunt, S., Steverink, N., Olthof, J., Van Der Schans, C., & Hobbelen, J. (2017). Social frailty in older adults: a scoping review. European Journal of Ageing, 14(3), 323–334. https://doi.org/10.1007/s10433-017-0414-7
Byrd, P. G. (1982). A descriptive study of mathematics anxiety: its nature and antecedents. Unpublished doctoral dissertation, Indiana University, Bloomington.
Calderón-Larrañaga, A., Vetrano, D. L., Welmer, A.-K., Grande, G., Fratiglioni, L., & Dekhtyar, S. (2019). Psychological correlates of multimorbidity and disability accumulation in older adults. Age and Ageing, 48(6), 789–796. https://doi.org/10.1093/ageing/afz117
Callow, D. D., Arnold-Nedimala, N. A., Jordan, L. S., Pena, G. S., Won, J., Woodard, J. L., & Smith, J. C. (2020). The mental health benefits of physical activity in older adults survive the COVID -19 pandemic. The American Journal of Geriatric Psychiatry, 28(10), 1046–1057. https://doi.org/10.1016/j.jagp.2020.06.024
Cao, W., Fang, Z., Hou, G., Han, M., Xu, X., Dong, J., & Zheng, J. (2020). The psychological impact of the COVID-19 epidemic on college students in China. Psychiatry Research, 287, 112934. https://doi.org/10.1016/j.psychres.2020.112934
Carayannis, E. G., & Campbell, D. F. (2010). Triple helix, quadruple helix and quintuple helix and how do knowledge, innovation and the environment relate to each other: a proposed framework for a trans-disciplinary analysis of sustainable development and social ecology. International Journal of Social Ecology and Sustainable Development, 1(1), 41–69. https://doi.org/10.4018/jsesd.2010010105
Castrejón-Pérez, R., & Borges-Yáñez, S. (2014). Frailty from an oral health point of view. The Journal of Frailty & Aging, 3 (3), 180-186. https://doi.org/10.14283/jfa.2014.21
Cerin, E., Nathan, A., van Cauwenberg, J., Barnett, D. W., Barnett, A., & Council on Environment and Physical Activity (CEPA) – Older Adults working group. (2017). The neighbourhood physical environment and active travel in older adults: A systematic review and meta-analysis. The International Journal of Behavioral Nutrition and Physical Activity, 14(1), 15. https://doi.org/10.1186/s12966-017-0471-5
Chan, C. D., DeDiego, A. C., & Band, M. P. (2019). Moving counselor educators to influential roles as advocates: an ecological systems approach to student-focused advocacy. Journal of Counselor Leadership and Advocacy, 6(1), 30–41. https://doi.org/10.1080/2326716X.2018.1545614
Chan, W. Y., Hollingsworth, M. A., Espelage, D. L., & Mitchell, K. J. (2016). Preventing violence in context: the importance of culture for implementing systemic change. Psychology of Violence, 6(1), 22–26. https://doi.org/10.1037/vio0000021
Chen, A. T., Ge, S., Cho, S., Teng, A. K., Chu, F., Demiris, G., & Zaslavsky, O. (2021). Reactions to COVID-19, information and technology use, and social connectedness among older adults with pre-frailty and frailty. Geriatric Nursing (New York, N.Y.), 42(1), 188–195. https://doi.org/10.1016/j.gerinurse.2020.08.001
Chen, C.-Y., Wu, S.-C., Chen, L.-J., & Lue, B.-H. (2010). The prevalence of subjective frailty and factors associated with frailty in Taiwan. Archives of Gerontology and Geriatrics, 50, S43–S47. https://doi.org/10.1016/S0167-4943(10)70012-1
Chen, L.-J., Chen, C.-Y., Lue, B.-H., Tseng, M.-Y., & Wu, S.-C. (2014). Prevalence and associated factors of frailty among elderly people in Taiwan. International Journal of Gerontology, 8(3), 114–119. https://doi.org/10.1016/j.ijge.2013.12.002
Chen, L.-K., Liu, L.-K., Woo, J., Assantachai, P., Auyeung, T.-W., Bahyah, K. S., Chou, M.-Y., Chen, L.-Y., Hsu, P.-S., Krairit, O., Lee, J. S. W., Lee, W.-J., Lee, Y., Liang, C.-K., Limpawattana, P., Lin, C.-S., Peng, L.-N., Satake, S., Suzuki, T., … Arai, H. (2014). Sarcopenia in Asia: consensus report of the asian working group for sarcopenia. Journal of the American Medical Directors Association, 15(2), 95–101. https://doi.org/10.1016/j.jamda.2013.11.025
Chen, S., & Bonanno, G. A. (2020). Psychological adjustment during the global outbreak of COVID-19: a resilience perspective. Psychological Trauma: Theory, Research, Practice, and Policy, 12(S1), S51–S54. https://doi.org/10.1037/tra0000685
Chen, Y., Jones, C., & Dunse, N. (2021). Coronavirus disease 2019 (COVID-19) and psychological distress in China: does neighbourhood matter? Science of The Total Environment, 759, 144203. https://doi.org/10.1016/j.scitotenv.2020.144203
Chen, Y.-J., & Chen, C.-Y. (2012). Living arrangement preferences of elderly people in taiwan as affected by family resources and social participation. Journal of Family History, 37(4), 381–394. https://doi.org/10.1177/0363199012440948
Chen, Z., Jiang, X., Shi, G., Wang, Y., Chu, X., Wang, Z., Guo, J., Zhu, Y., Chen, J., Wang, X., & Bao, Z. (2021). Social frailty and longitudinal risk of depressive symptoms in a Chinese population: the Rugao Longevity and aging study. Psychogeriatrics, 21(4), 483–490. https://doi.org/10.1111/psyg.12696
Cheng, C., Wang, H.-Y., & Chan, L. (2021). Multiple forms of mass anxiety in coronavirus disease-2019 pandemic. Journal of Affective Disorders, 291, 338–343. https://doi.org/10.1016/j.jad.2021.05.034
Cheon, E.-Y. (2010). Correlation of social network types on health status of Korean elders. Journal of Korean Academy of Nursing, 40(1), 88–98. https://doi.org/10.4040/jkan.2010.40.1.88
Chode, S., Malmstrom, T., Miller, D., & Morley, J. E. (2016). Frailty, diabetes, and mortality in middle-aged African Americans. The Journal of Nutrition, Health & Aging, 20(8), 854–859. https://doi.org/10.1007/s12603-016-0801-3.
Choi, K. W., Chen, C.-Y., Stein, M. B., Klimentidis, Y. C., Wang, M.-J., Koenen, K. C., & Smoller, J. W. (2019). Assessment of bidirectional relationships between physical activity and depression among adults: a 2-sample mendelian randomization study. JAMA Psychiatry, 76(4), 399–408. https://doi.org/1001/jamapsychiatry.2018.4175
Church, S., Rogers, E., Rockwood, K., & Theou, O. (2020). A scoping review of the Clinical Frailty Scale. BMC Geriatrics, 20(1), 393. https://doi.org/10.1186/s12877-020-01801-7
Clegg, A., Young, J., Iliffe, S., Rikkert, M. O., & Rockwood, K. (2013). Frailty in elderly people. The Lancet, 381(9868), 752–762. https://doi.org/10.1016/S0140-6736(12)62167-9
Collard, R. M., Boter, H., Schoevers, R. A., & Oude Voshaar, R. C. (2012). Prevalence of frailty in community-dwelling older persons: a systematic review. Journal of the American Geriatrics Society, 60(8), 1487–1492. https://doi.org/10.1111/j.1532-5415.2012.04054.x
Collins, J. M., & Paul, P. B. (1994). Functional health, social support, and morale of older women living alone in appalachia. Journal of Women & Aging, 6(3), 39–52. https://doi.org/10.1300/J074v06n03_04
Collins, J. T., Short, R., Carter, B., Verduri, A., Myint, P. K., Quinn, T. J., Vilches-Moraga, A., Stechman, M. J., Moug, S., McCarthy, K., & Hewitt, J. (2020). The clinical frailty scale: estimating the prevalence of frailty in older patients hospitalised with COVID-19. The COPE Study. Geriatrics, 5(3), Article 3. https://doi.org/10.3390/geriatrics5030058
Committee on Capitalizing on Social Science and Behavioral Research to Improve the Public's Health, Division of Health Promotion and Disease Prevention, Institute of Medicine. (2001). Promoting health: intervention strategies from social and behavioral research. American Journal of Health Promotion, 15(3), 149–166. https://doi.org/10.4278/0890-1171-15.3.149
Cooper, C., & Quick, J. C. (2017). The handbook of stress and health: a guide to research and practice. John Wiley & Sons.
Cramm J. M., Dijk H. M. V., & Nieboer A. P. (2018). The creation of age-friendly environments is especially important to frail older people. Ageing & Society, 38(4), 700–720. https://doi.org/10.1017/S0144686X16001240
Cramm, J. M., & Nieboer, A. P. (2013). Relationships between frailty, neighborhood security, social cohesion and sense of belonging among community-dwelling older people. Geriatrics & Gerontology International, 13(3), 759–763. https://doi.org/10.1111/j.1447-0594.2012.00967.x
Cronbach, L. J., & Meehl, P. E. (1955). Construct validity in psychological tests. Psychological Bulletin, 52(4), 281. https://doi.org/10.1037/h0040957
Crow, R. S., Lohman, M. C., Titus, A. J., Cook, S. B., Bruce, M. L., Mackenzie, T. A., Bartels, S. J., & Batsis, J. A. (2019). Association of obesity and frailty in older adults: NHANES 1999–2004. The Journal of Nutrition, Health & Aging, 23(2), 138–144. https://doi.org/10.1007/s12603-018-1138-x
Cruz-Jentoft, A. J., Kiesswetter, E., Drey, M., & Sieber, C. C. (2017). Nutrition, frailty, and sarcopenia. Aging Clinical and Experimental Research, 29(1), 43–48. https://doi.org/10.1007/s40520-016-0709-0
De Bruijn, G.-J., Kremers, S. P. J., Lensvelt-Mulders, G., de Vries, H., van Mechelen, W., & Brug, J. (2006). Modeling individual and physical environmental factors with adolescent physical activity. American Journal of Preventive Medicine, 30(6), 507–512. https://doi.org/10.1016/j.amepre.2006.03.001
De Donder, L., De Witte, N., Buffel, T., Dury, S., & Verté, D. (2012). Social capital and feelings of unsafety in later life: a study on the influence of social networks, place attachment, and civic participation on perceived safety in Belgium. Research on Aging, 34(4), 425–448. https://doi.org/10.1177/0164027511433879
De Smet, R., Mellaerts, B., Vandewinckele, H., Lybeert, P., Frans, E., Ombelet, S., Lemahieu, W., Symons, R., Ho, E., Frans, J., Smismans, A., & Laurent, M. R. (2020). Frailty and mortality in hospitalized older adults with COVID-19: retrospective observational study. Journal of the American Medical Directors Association, 21(7), 928-932. https://doi.org/10.1016/j.jamda.2020.06.008
De Witte, N., Gobbens, R., De Donder, L., Dury, S., Buffel, T., Schols, J., & Verté, D. (2013). The comprehensive frailty assessment instrument: development, validity, and reliability. Geriatric Nursing, 34(4), 274–281. https://doi.org/10.1016/j.gerinurse.2013.03.002
Dent, E., Kowal, P., & Hoogendijk, E. O. (2016). Frailty measurement in research and clinical practice: a review. European Journal of Internal Medicine, 31, 3–10. https://doi.org/10.1016/j.ejim.2016.03.007
Dent, E., Morley, J., Cruz-Jentoft, A., Woodhouse, L., Rodríguez-Mañas, L., Fried, L., Woo, J., Aprahamian, I., Sanford, A., & Lundy, J. (2019). Physical frailty: ICFSR international clinical practice guidelines for identification and management. The Journal of Nutrition, Health & Aging, 23(9), 771–787. https://doi.org/10.1007/s12603-019-1273-z.
Dentro, K. N., Beals, K., Crouter, S. E., Eisenmann, J. C., McKenzie, T. L., Pate, R. R., Saelens, B. E., Sisson, S. B., Spruijt-Metz, D., & Sothern, M. S. (2014). Results from the United States’ 2014 report card on physical activity for children and youth. Journal of Physical Activity and Health, 11(1), 105–112. https://doi.org/10.1123/jpah.2014-0184
Diaz, R., Hernandez-Vaquero, D., Alvarez, R., Moris, C., & Silva, J. (2015). Frailty plays a key role after cardiac surgery. Heart, Lung and Circulation, 24(9), 940. https://doi.org/ 10.1016/j.hlc.2015.03.022
Dispenza, F., Dew, B. J., Tatum, A. K., & Wolf, E. C. M. (2015). Sexual health risk behaviors among older men who have sex with men: implications for interventions. Adultspan Journal, 14(1), 35–48. https://doi.org/10.1002/j.2161-0029.2015.00035.x
Dobransky, K., & Hargittai, E. (2016). Unrealized potential: exploring the digital disability divide. Poetics, 58, 18–28. https://doi.org/10.1016/j.poetic.2016.08.003
Dorn, A. van, Cooney, R. E., & Sabin, M. L. (2020). COVID-19 exacerbating inequalities in the US. Lancet, 395(10232), 1243–1244. https://doi.org/10.1016/S0140-6736(20)30893-X
Duppen, D., Van der Elst, M. C. J., Dury, S., Lambotte, D., & De Donder, L. (2019). The social environment’s relationship with frailty: evidence from existing studies. Journal of Applied Gerontology, 38(1), 3–26. https://doi.org/10.1177/0733464816688310
Edwards, J. R., Caplan, R. D., & Van Harrison, R. (1998). Person-environment fit theory: Conceptual foundations, empirical evidence, and directions for future research. In C. L. Cooper (Ed.), Theories of organizational stress (pp. 28-67). Oxford: Oxford University Press.
Elovainio, M., Hakulinen, C., Pulkki-Råback, L., Virtanen, M., Josefsson, K., Jokela, M., Vahtera, J., & Kivimäki, M. (2017). Contribution of risk factors to excess mortality in isolated and lonely individuals: an analysis of data from the UK Biobank cohort study. The Lancet Public Health, 2(6), 260–266. https://doi.org/10.1016/S2468-2667(17)30075-0
Endler, N. S., & Kocovski, N. L. (2001). State and trait anxiety revisited. Journal of Anxiety Disorders, 15(3), 231–245. https://doi.org/10.1016/s0887-6185(01)00060-3
Engel, G. L. (1977). The need for a new medical model: a challenge for biomedicine. Science, 196(4286), 129–136. https://doi.org/10.1126/science.847460
Ensrud, K. E. (2008). Comparison of 2 frailty indexes for prediction of falls, disability, fractures, and death in older women. Archives of Internal Medicine, 168(4), 382. https://doi.org/10.1001/archinternmed.2007.113
Ensrud, K. E., Ewing, S. K., Cawthon, P. M., Fink, H. A., Taylor, B. C., Cauley, J. A., Dam, T. T., Marshall, L. M., Orwoll, E. S., & Cummings, S. R. (2009). A comparison of frailty indexes for the prediction of falls, disability, fractures, and mortality in older men. Journal of the American Geriatrics Society, 57(3), 492–498. https://doi.org/10.1111/j.1532-5415.2009.02137.x
Etman, A., Kamphuis, C. B., Prins, R. G., Burdorf, A., Pierik, F. H., & van Lenthe, F. J. (2014). Characteristics of residential areas and transportational walking among frail and non-frail Dutch elderly: does the size of the area matter? International Journal of Health Geographics, 13(1), 7. https://doi.org/10.1186/1476-072X-13-7
Fakoya, O. A., McCorry, N. K., & Donnelly, M. (2020). Loneliness and social isolation interventions for older adults: a scoping review of reviews. BMC Public Health, 20(1), 129. https://doi.org/10.1186/s12889-020-8251-6
Feng, L., Nyunt, M. S. Z., Feng, L., Yap, K. B., & Ng, T. P. (2014). Frailty predicts new and persistent depressive symptoms among community-dwelling older adults: findings from Singapore longitudinal aging study. Journal of the American Medical Directors Association, 15(1), 76.e7–12. https://doi.org/10.1016/j.jamda.2013.10.001
Ferrazzoli, D., & Sancesario, G. (2013). Development and significance of the frailty concept in the elderly: a possible modern view. CNS & Neurological Disorders - Drug Targets- CNS & Neurological Disorders), 12(4), 529–531. https://doi.org/10.2174/1871527311312040014
Fielding, J. E., Kumanyika, S., & Manderscheid, R. W. (2013). A perspective on the development of the Healthy People 2020 framework for improving US population health. Public Health Reviews, 35(1), 3. https://doi.org/10.1007/BF03391688
Fielding, J. E., Teutsch, S., & Breslow, L. (2010). A framework for public health in the United States. Public Health Reviews, 32(1), 174–189. https://doi.org/10.1007/BF03391597
Fincham, S. (1992). Community health promotion programs. Social Science & Medicine, 35(3), 239–249. https://doi.org/10.1016/0277-9536(92)90020-q
Fiorillo, A., & Gorwood, P. (2020). The consequences of the COVID-19 pandemic on mental health and implications for clinical practice. European Psychiatry, 63(1), e32. https://doi.org/10.1192/j.eurpsy.2020.35
Fisher, G. S., Coolbaugh, K., & Rhodes, C. (2006). Field test of the cougar home safety assessment for older persons version 1.0. Californian Journal of Health Promotion, 4(2), Article 2. https://doi.org/10.32398/cjhp.v4i2.1944
Fitten, L. J. (2015). Psychological frailty in the aging patient. Frailty: Pathophysiology, Phenotype and Patient Care, 83, 45–54. https://doi.org/10.1159/000382060
Flaatten, H., De Lange, D. W., Morandi, A., Andersen, F. H., Artigas, A., Bertolini, G., Boumendil, A., Cecconi, M., Christensen, S., & Faraldi, L. (2017). The impact of frailty on ICU and 30-day mortality and the level of care in very elderly patients (≥ 80 years). Intensive Care Medicine, 43(12), 1820–1828. https://doi.org/10.1007/s00134-017-4940-8
Franceschi, C., Garagnani, P., Parini, P., Giuliani, C., & Santoro, A. (2018). Inflammaging: a new immune–metabolic viewpoint for age-related diseases. Nature Reviews Endocrinology, 14(10), 576–590. https://doi.org/ 10.1038/s41574-018-0059-4
Franse, C. B., Grieken, A. van, Qin, L., Melis, R. J. F., Rietjens, J. A. C., & Raat, H. (2017). Socioeconomic inequalities in frailty and frailty components among community-dwelling older citizens. PLOS ONE, 12(11), e0187946. https://doi.org/10.1371/journal.pone.0187946
Fried, L. P., Tangen, C. M., Walston, J., Newman, A. B., Hirsch, C., Gottdiener, J., Seeman, T., Tracy, R., Kop, W. J., Burke, G., & McBurnie, M. A. (2001). Frailty in older adults: evidence for a phenotype. The Journals of Gerontology Series A: Biological Sciences and Medical Sciences, 56(3), M146–M157. https://doi.org/10.1093/gerona/56.3.M146
Fritz, H., Cutchin, M. P., Gharib, J., Haryadi, N., Patel, M., & Patel, N. (2020). Neighborhood characteristics and frailty: a scoping Review. The Gerontologist, 60(4), e270–e285. https://doi.org/10.1093/geront/gnz072
Fujita, K., Inoue, A., Kuzuya, M., Uno, C., Huang, C. H., Umegaki, H., & Onishi, J. (2021). Mental health status of the older adults in Japan during the COVID-19 pandemic. Journal of the American Medical Directors Association, 22(1), 220. https://doi.org/10.1016/j.jamda.2020.11.023
Fujiwara, Y., Shinkai, S., Kumagai, S., Amano, H., Yoshida, Y., Yoshida, H., Kim, H., Suzuki, T., Ishizaki, T., Haga, H., Watanabe, S., & Shibata, H. (2003). Longitudinal changes in higher-level functional capacity of an older population living in a Japanese urban community. Archives of Gerontology and Geriatrics, 36(2), 141–153. https://doi.org/10.1016/S0167-4943(02)00081-X
Furtado, G. E., Caldo, A., Rieping, T., Filaire, E., Hogervorst, E., Teixeira, A. M. B., & Ferreira, J. P. (2018). Physical frailty and cognitive status over-60 age populations: a systematic review with meta-analysis. Archives of Gerontology and Geriatrics, 78, 240–248. https://doi.org/10.1016/j.archger.2018.07.004
Gadelha, A. B., & Lima, R. M. (2020). COVID-19 quarantine in older people: the need to think about sarcopenia-related phenotypes. The Journal of Frailty & Aging, 9(4), 244–245. https://doi.org/10.14283/jfa.2020.31
Gallagher, M. W., Zvolensky, M. J., Long, L. J., Rogers, A. H., & Garey, L. (2020). The impact of COVID-19 experiences and associated stress on anxiety, depression, and functional impairment in american adults. Cognitive Therapy and Research, 44(6), 1043–1051. https://doi.org/10.1007/s10608-020-10143-y
Gao, J., Zheng, P., Jia, Y., Chen, H., Mao, Y., Chen, S., Wang, Y., Fu, H., & Dai, J. (2020). Mental health problems and social media exposure during COVID-19 outbreak. Plos One, 15(4), e0231924. https://doi.org/10.1371/journal.pone.0231924
Garre-Olmo, J., Calvó-Perxas, L., López-Pousa, S., de Gracia Blanco, M., & Vilalta-Franch, J. (2013). Prevalence of frailty phenotypes and risk of mortality in a community-dwelling elderly cohort. Age and Ageing, 42(1), 46–51. https://doi.org/10.1093/ageing/afs047
Gerber, Y., Benyamini, Y., Goldbourt, U., & Drory, Y. (2010). Neighborhood socioeconomic context and long-term survival after myocardial infarction. Circulation, 121(3), 375–383. https://doi.org/10.1161/CIRCULATIONAHA.109.882555
Gill, T. M., Baker, D. I., Gottschalk, M., Gahbauer, E. A., Charpentier, P. A., de Regt, P. T., & Wallace, S. J. (2003). A prehabilitation program for physically frail community-living older persons. Archives of Physical Medicine and Rehabilitation, 84(3), 394–404. https://doi.org/10.1053/apmr.2003.50020
Gobbens, R. J. J., Luijkx, K. G., & van Assen, M. A. L. M. (2013). Explaining quality of life of older people in the Netherlands using a multidimensional assessment of frailty. Quality of Life Research: An International Journal of Quality of Life Aspects of Treatment, Care and Rehabilitation, 22(8), 2051–2061. https://doi.org/10.1007/s11136-012-0341-1
Gobbens, R. J. J., Luijkx, K. G., Wijnen-Sponselee, M. T., & Schols, J. M. G. A. (2010). Towards an integral conceptual model of frailty. The Journal of Nutrition, Health & Aging, 14(3), 175–181. https://doi.org/10.1007/s12603-010-0045-6
Gobbens, R. J. J., van Assen, M. A. L. M., Luijkx, K. G., Wijnen-Sponselee, M. Th., & Schols, J. M. G. A. (2010a). Determinants of frailty. Journal of the American Medical Directors Association, 11(5), 356–364. https://doi.org/10.1016/j.jamda.2009.11.008
Gobbens, R. J. J., van Assen, M. A. L. M., Luijkx, K. G., Wijnen-Sponselee, M. Th., & Schols, J. M. G. A. (2010b). The Tilburg Frailty Indicator: psychometric properties. Journal of the American Medical Directors Association, 11(5), 344–355. https://doi.org/10.1016/j.jamda.2009.11.003
Gobbens, R. J., van Assen, M. A., Luijkx, K. G., & Schols, J. M. (2012). Testing an integral conceptual model of frailty. Journal of Advanced Nursing, 68(9), 2047–2060. https://doi.org/10.1111/j.1365-2648.2011.05896.x
Goethals, L., Barth, N., Guyot, J., Hupin, D., Celarier, T., & Bongue, B. (2020). Impact of home quarantine on physical activity among older adults living at home during the COVID-19 pandemic: qualitative interview study. JMIR Aging, 3(1), e19007. https://doi.org/10.2196/19007
Gonzalez, L. (2017). A focus on the program of all-inclusive care for the elderly. Journal of Aging & Social Policy, 29(5), 475–490. https://doi.org/10.1080/08959420.2017.1281092
Gorsuch, R. L. (1997). Exploratory factor analysis: its role in item analysis. Journal of Personality Assessment, 68(3), 532–560. https://doi.org/10.1207/s15327752jpa6803_5
Green, L. W. (1984). Modifying and developing health behavior. Annual Review of Public Health, 5(1), 215–236. https://doi.org/10.1146/annurev.pu.05.050184.001243
Green, L. W., Richard, L., & Potvin, L. (1996). Ecological foundations of health promotion. American Journal of Health Promotion, 10(4), 270–281. 10.4278/0890-1171-10.4.270
Haan, M., Kaplan, G. A., & Camacho, T. (1987). Poverty and health prospective evidence from the alameda county study. American Journal of Epidemiology, 125(6), 989–998. https://doi.org/10.1093/oxfordjournals.aje.a114637
Haider, S., Grabovac, I., Drgac, D., Mogg, C., Oberndorfer, M., & Dorner, T. E. (2020). Impact of physical activity, protein intake and social network and their combination on the development of frailty. European Journal of Public Health, 30(2), 340–346. https://doi.org/10.1093/eurpub/ckz191
Hamerman, D. (1999). Toward an understanding of frailty. Annals of Internal Medicine, 130(11), 945–950. https://doi.org/10.7326/0003-4819-130-11-199906010-00022
Haslbeck, J. W., McCorkle, R., & Schaeffer, D. (2012). Chronic illness self-management while living alone in later life: a systematic integrative review. Research on Aging, 34(5), 507–547. https://doi.org/10.1177/0164027511429808
Hawryluck, L., Gold, W. L., Robinson, S., Pogorski, S., Galea, S., & Styra, R. (2004). SARS control and psychological effects of quarantine, Toronto, Canada. Emerging Infectious Diseases, 10(7), 1206–1212. https://doi.org/10.3201/eid1007.030703
He, B., Ma, Y., Wang, C., Jiang, M., Geng, C., Chang, X., Ma, B., & Han, L. (2019). Prevalence and risk factors for frailty among community-dwelling older people in China: a systematic review and meta-analysis. The Journal of Nutrition, Health & Aging, 23(5), 442–450. https://doi.org/10.1007/s12603-019-1179-9
Heinz, A., Zhao, X., & Liu, S. (2020). Implications of the association of social exclusion with mental health. JAMA Psychiatry, 77(2), 113–114. https://doi.org/10.1001/jamapsychiatry.2019.3009
Hensen, B. A., & Koltz, R. L. (2018). Counseling aging men: best practices for group counseling. Adultspan Journal, 17(2), 97–108. https://doi.org/10.1002/adsp.12063
Heuberger, R. A. (2011). The frailty syndrome: a comprehensive review. Journal of Nutrition in Gerontology and Geriatrics, 30(4), 315–368. https://doi.org/10.1080/21551197.2011.623931
Hewitt, J., Carter, B., Vilches-Moraga, A., Quinn, T. J., Braude, P., Verduri, A., Pearce, L., Stechman, M., Short, R., Price, A., Collins, J. T., Bruce, E., Einarsson, A., Rickard, F., Mitchell, E., Holloway, M., Hesford, J., Barlow-Pay, F., Clini, E., … Guaraldi, G. (2020). The effect of frailty on survival in patients with COVID-19 (COPE): a multicentre, European, observational cohort study. The Lancet Public Health, 5(8), e444–e451. https://doi.org/10.1016/S2468-2667(20)30146-8
Hoek, R. A. S., Manintveld, O. C., Betjes, M. G. H., Hellemons, M. E., Seghers, L., Van Kampen, J. A. A., Caliskan, K., van de Wetering, J., van den Hoogen, M., Metselaar, H. J., Hesselink, D. A., & Group, the R. T. (2020). COVID-19 in solid organ transplant recipients: a single-center experience. Transplant International, 33(9), 1099–1105. https://doi.org/10.1111/tri.13662
Holmes, E. A., O’Connor, R. C., Perry, V. H., Tracey, I., Wessely, S., Arseneault, L., Ballard, C., Christensen, H., Cohen Silver, R., Everall, I., Ford, T., John, A., Kabir, T., King, K., Madan, I., Michie, S., Przybylski, A. K., Shafran, R., Sweeney, A., … Bullmore, E. (2020). Multidisciplinary research priorities for the COVID-19 pandemic: a call for action for mental health science. The Lancet. Psychiatry, 7(6), 547–560. https://doi.org/10.1016/S2215-0366(20)30168-1
Holt-Lunstad, J., Smith, T. B., & Layton, J. B. (2010). Social relationships and mortality risk: a meta-analytic review. PLoS Medicine, 7(7), e1000316. https://doi.org/10.1371/journal.pmed.1000316
Hoogendijk, E. O., & Hout, H. P. J. van. (2012). Investigating measurement properties of the groningen frailty indicator: a more systematic approach is needed. Journal of the American Medical Directors Association, 13(8), 757. https://doi.org/10.1016/j.jamda.2012.06.008
Hoogendijk, E. O., Rockwood, K., Theou, O., Armstrong, J. J., Onwuteaka-Philipsen, B. D., Deeg, D. J. H., & Huisman, M. (2018). Tracking changes in frailty throughout later life: results from a 17-year longitudinal study in the Netherlands. Age and Ageing, 47(5), 727–733. https://doi.org/10.1093/ageing/afy081
Hoogendijk, E. O., van Hout, H. P. J., Heymans, M. W., van der Horst, H. E., Frijters, D. H. M., Broese van Groenou, M. I., Deeg, D. J. H., & Huisman, M. (2014). Explaining the association between educational level and frailty in older adults: results from a 13-year longitudinal study in the Netherlands. Annals of Epidemiology, 24(7), 538-544.e2. https://doi.org/10.1016/j.annepidem.2014.05.002
Hooper, D., Coughlan, J., & Mullen, M. (2008, June). Evaluating model fit: a synthesis of the structural equation modelling literature. Paper presented at the 7th European Conference on Research Methodology for Business and Management Studies, Regent’s College, London, United Kingdom.
Howden-Chapman, P., Signal, L., & Crane, J. (1999). Housing and health in older people: ageing in place. Social Policy Journal of New Zealand, 13 (13), 14–30.
Huang, C., Wang, Y., Li, X., Ren, L., Zhao, J., Hu, Y., Zhang, L., Fan, G., Xu, J., Gu, X., Cheng, Z., Yu, T., Xia, J., Wei, Y., Wu, W., Xie, X., Yin, W., Li, H., Liu, M., … Cao, B. (2020). Clinical features of patients infected with 2019 novel coronavirus in Wuhan, China. The Lancet, 395(10223), 497–506. https://doi.org/10.1016/S0140-6736(20)30183-5
Huang, I., & Pranata, R. (2020). Lymphopenia in severe coronavirus disease-2019 (COVID-19): systematic review and meta-analysis. Journal of Intensive Care, 8, 1–10. https://doi.org/10.1186/s40560-020-00453-4
Huang, I., Lim, M. A., & Pranata, R. (2020). Diabetes mellitus is associated with increased mortality and severity of disease in COVID-19 pneumonia – a systematic review, meta-analysis, and meta-regression. Diabetes & Metabolic Syndrome: Clinical Research & Reviews, 14(4), 395–403. https://doi.org/10.1016/j.dsx.2020.04.018
Hubbard, R. E., & Woodhouse, K. W. (2010). Frailty, inflammation, and the elderly. Biogerontology, 11(5), 635–641. https://doi.org/10.1007/s10522-010-9292-5
Hubbard, R. E., Lang, I. A., Llewellyn, D. J., & Rockwood, K. (2010). Frailty, body mass index, and abdominal obesity in older people. The Journals of Gerontology: Series A, 65(4), 377–381. https://doi.org/10.1093/gerona/glp186
Hussien, H., Nastasa, A., Apetrii, M., Nistor, I., Petrovic, M., & Covic, A. (2021). Different aspects of frailty and COVID-19: points to consider in the current pandemic and future ones. BMC Geriatrics, 21(1), 389. https://doi.org/10.1186/s12877-021-02316-5
Hyland, P., Shevlin, M., McBride, O., Murphy, J., Karatzias, T., Bentall, R. P., Martinez, A., & Vallières, F. (2020). Anxiety and depression in the Republic of Ireland during the COVID-19 pandemic. Acta Psychiatrica Scandinavica, 142(3), 249–256. https://doi.org/10.1111/acps.13219
Igarashi, H., Kurth, M. L., Lee, H. S., Choun, S., Lee, D., & Aldwin, C. M. (2021). Resilience in older adults during the COVID-19 pandemic: a socioecological approach. Journals of Gerontology - Series B Psychological Sciences and Social Sciences, 77 (4), e64-e69 https://doi.org/10.1093/geronb/gbab058
Ingram, I., Kelly, P. J., Deane, F. P., Baker, A. L., Goh, M. C. W., Raftery, D. K., & Dingle, G. A. (2020). Loneliness among people with substance use problems: a narrative systematic review. Drug and Alcohol Review, 39(5), 447–483. https://doi.org/10.1111/dar.13064
James, N., & Thériault, V. (2020). Adult education in times of the COVID-19 pandemic: Inequalities, changes, and resilience. Studies in the Education of Adults, 52(2), 129–133. https://doi.org/10.1080/02660830.2020.1811474
Jang, A. R., & Yoon, J. Y. (2021). Multilevel factors associated with frailty among the rural elderly in Korea based on the ecological model. International Journal of Environmental Research and Public Health, 18(8), 4146. https://doi.org/10.3390/ijerph18084146
Jia, H., Moriarty, D. G., & Kanarek, N. (2009). County-level social environment determinants of health-related quality of life among US adults: a Multilevel Analysis. Journal of Community Health, 34(5), 430–439. https://doi.org/10.1007/s10900-009-9173-5
Jin, Y., Si, H., Qiao, X., Tian, X., Liu, X., Xue, Q.-L., & Wang, C. (2020). Relationship between frailty and depression among community-dwelling older adults: the mediating and moderating role of social support. The Gerontologist, 60(8), 1466–1475. https://doi.org/10.1093/geront/gnaa072
Jones, C. M., Kaul, G., & Lipson, M. L. (1994). Information, trading, and volatility. Journal of Financial Economics, 36(1), 127–154. https://doi.org/10.1093/rfs/hhy083
Jung, H. W., Kim, S. W., Ahn, S., Lim, J. Y., Han, J.W., Kim, T. H., Kim, K.W., Kim, K.I., & Kim, C. H. (2014). Prevalence and outcomes of frailty in Korean elderly population: comparisons of a multidimensional frailty index with two phenotype models. PloS One, 9(2), e87958. https://doi.org/10.1371/journal.pone.0087958
Kaiser, H. F. (1974). An index of factorial simplicity. Psychometrika, 39(1), 31–36. https://doi.org/10.1007/BF02291575
Khan, K. S., Mamun, M. A., Griffiths, M. D., & Ullah, I. (2022). The mental health impact of the COVID-19 pandemic across different cohorts. International Journal of Mental Health and Addiction, 20(1), 380–386. https://doi.org/10.1007/s11469-020-00367-0
Kiely, D. K., Cupples, L. A., & Lipsitz, L. A. (2009). Validation and comparison of two frailty indexes: the MOBILIZE Boston Study. Journal of the American Geriatrics Society, 57(9), 1532–1539. https://doi.org/10.1111/j.1532-5415.2009.02394.x
Kierkegaard, S., & Lowrie, W. (1944). Concluding unscientific postscript to the philosophical fragments: a mimic-pathetic-dialectic composition. An Existential Contribution by Johannes Climacus. Princeton: Princeton University Press.
Killgore, W. D. S., Cloonan, S. A., Taylor, E. C., & Dailey, N. S. (2020). Loneliness: a signature mental health concern in the era of COVID-19. Psychiatry Research, 290, 113117. https://doi.org/10.1016/j.psychres.2020.113117
Kim, J., Lee, Y., Won, C. W., Lee, K. E., & Chon, D. (2018). Nutritional status and frailty in community-dwelling older Korean adults: the Korean frailty and aging cohort study. The Journal of Nutrition, Health & Aging, 22(7), 774–778. https://doi.org/10.1007/s12603-018-1005-9
King, K. E., Fillenbaum, G. G., & Cohen, H. J. (2017). A cumulative deficit laboratory test–based frailty index: personal and neighborhood associations. Journal of the American Geriatrics Society, 65(9), 1981–1987. https://doi.org/10.1111/jgs.14983
Koh, H. K., Piotrowski, J. J., Kumanyika, S., & Fielding, J. E. (2011). Healthy people: a 2020 vision for the social determinants approach. Health Education & Behavior, 38(6), 551–557. https://doi.org/10.1177/1090198111428646
Kojima, G., Liljas, A. E. M., & Iliffe, S. (2019). Frailty syndrome: implications and challenges for health care policy. Risk Management and Healthcare Policy, 12, 23–30. https://doi.org/10.2147/RMHP.S168750
Kojima, G., Walters, K., Iliffe, S., Taniguchi, Y., & Tamiya, N. (2020). Marital status and risk of physical frailty: a systematic review and meta-analysis. Journal of the American Medical Directors Association, 21(3), 322–330. https://doi.org/ 10.1016/j.jamda.2019.09.017
Kojima, M., Satake, S., Osawa, A., & Arai, H. (2021). Management of frailty under COVID-19 pandemic in Japan. Global Health & Medicine, 3(4), 196–202. https://doi.org/10.35772/ghm.2020.01118
Kormondy, E. J. (1969). Concepts of ecology. New Jersey: Prentice-Hall.
Krasny, M. E., & Roth, W. (2010). Environmental education for social–ecological system resilience: a perspective from activity theory. Environmental Education Research, 16(5–6), 545–558. https://doi.org/10.1080/13504622.2010.505431
Krendl, A. C., & Perry, B. L. (2021). The impact of sheltering in place during the COVID-19 pandemic on older adults’ social and mental well-being. The Journals of Gerontology: Series B, 76(2), 53–58. https://doi.org/10.1093/geronb/gbaa110
Labenz, C., Kremer, W. M., Schattenberg, J. M., Wörns, M.-A., Toenges, G., Weinmann, A., Galle, P. R., & Sprinzl, M. F. (2020). Clinical frailty scale for risk stratification in patients with SARS-CoV-2 infection. Journal of Investigative Medicine, 68(6), 1199–1202. https://doi.org/10.1136/jim-2020-001410
Lang, I. A., Hubbard, R. E., Andrew, M. K., Llewellyn, D. J., Melzer, D., & Rockwood, K. (2009). Neighborhood deprivation, individual socioeconomic status, and frailty in older adults. Journal of the American Geriatrics Society, 57(10), 1776–1780. https://doi.org/10.1111/j.1532-5415.2009.02480.x
Lang, P. O., Michel, J. P., & Zekry, D. (2009). Frailty syndrome: a transitional state in a dynamic process. Gerontology, 55(5), 539–549. https://doi.org/10.1159/000211949
Lawton, M. P., Windley, P. G., & Byerts, T. O. (1982). Aging and the environment: theoretical approaches. New York: Springer Publishing.
Ledford, H. (2020). How does COVID-19 kill? uncertainty is hampering doctors’ ability to choose treatments. Nature, 580(7803), 311–313. https://doi.org/10.1038/d41586-020-01056-7
Lee, S. A., Jobe, M. C., & Mathis, A. A. (2021). Mental health characteristics associated with dysfunctional coronavirus anxiety. Psychological Medicine, 51(8), 1403–1404. https://doi.org/10.1017/S003329172000121X
Lee, S. A., Mathis, A. A., Jobe, M. C., & Pappalardo, E. A. (2020). Clinically significant fear and anxiety of COVID-19: a psychometric examination of the coronavirus anxiety scale. Psychiatry Research, 290, 113112. https://doi.org/10.1016/j.psychres.2020.113112
Lee, Y., Chon, D., Kim, J., Ki, S., & Yun, J. (2020). The predictive value of social frailty on adverse outcomes in older adults living in the community. Journal of the American Medical Directors Association, 21(10), 1464-1469.e2. https://doi.org/10.1016/j.jamda.2020.03.010
Lehning, A. J., Smith, R. J., & Dunkle, R. E. (2014). Age-friendly environments and self-rated health: an exploration of detroit elders. Research on Aging, 36(1), 72–94. https://doi.org/10.1177/0164027512469214
Leung, K. M., Ou, K. L., Chung, P. K., & Thøgersen-Ntoumani, C. (2021). Older adults’ perceptions toward walking: a qualitative study using a social-ecological model. International Journal of Environmental Research and Public Health, 18(14), 7686. https://doi.org/10.3390/ijerph18147686
Level, C., Tellier, E., Dezou, P., Chaoui, K., Kherchache, A., Sejourné, P., & Soo, A. M. R. P. (2018). Outcome of older persons admitted to intensive care unit, mortality, prognosis factors, dependency scores and ability trajectory within 1 year: A prospective cohort study. Aging Clinical and Experimental Research, 30(9), 1041–1051. https://doi.org/10.1007/s40520-017-0871-z
Lewin, K. (1935). Psycho-sociological problems of a minority group. Character & Personality; A Quarterly for Psychodiagnostic & Allied Studies. 3, 175–187. https://doi.org/10.1111/j.1467-6494.1935.tb01996.x
Lewis, E. G., Breckons, M., Lee, R. P., Dotchin, C., & Walker, R. (2021). Rationing care by frailty during the COVID-19 pandemic. Age and Ageing, 50(1), 7–10. https://doi.org/10.1093/ageing/afaa171
Li, W., Yang, Y., Liu, Z. H., Zhao, Y. J., Zhang, Q., Zhang, L., Cheung, T., & Xiang, Y. T. (2020). Progression of mental health services during the COVID-19 outbreak in China. International Journal of Biological Sciences, 16(10), 1732. https://doi.org/ 10.7150/ijbs.45120
Lin, Y. Y., & Huang, C. S. (2016). Aging in Taiwan: building a society for active aging and aging in place. The Gerontologist, 56(2), 176–183. https://doi.org/10.1093/geront/gnv107
Liotta, G., Marazzi, M. C., Orlando, S., & Palombi, L. (2020). Is social connectedness a risk factor for the spreading of COVID-19 among older adults? the Italian paradox. PLOS ONE, 15(5), e0233329. https://doi.org/10.1371/journal.pone.0233329
Losada-Baltar, A., Jiménez-Gonzalo, L., Gallego-Alberto, L., Pedroso-Chaparro, M. del S., Fernandes-Pires, J., & Márquez-González, M. (2021). “We are staying at home.” association of self-perceptions of aging, personal and family resources, and loneliness with psychological distress during the lock-down period of COVID-19. The Journals of Gerontology: Series B, 76(2), e10–e16. https://doi.org/10.1093/geronb/gbaa048
Lozupone, M., La Montagna, M., Di Gioia, I., Sardone, R., Resta, E., Daniele, A., Giannelli, G., Bellomo, A., & Panza, F. (2020). Social frailty in the COVID-19 pandemic era. Frontiers in Psychiatry, 11, 1168. https://doi.org/10.3389/fpsyt.2020.577113
Luger, E., Dorner, T. E., Haider, S., Kapan, A., Lackinger, C., & Schindler, K. (2016). Effects of a home-based and volunteer-administered physical training, nutritional, and social support program on malnutrition and frailty in older persons: a randomized controlled trial. Journal of the American Medical Directors Association, 17(7), 671.e9-671.e16. https://doi.org/10.1016/j.jamda.2016.04.018
Ma, L., Sun, F., & Tang, Z. (2018). Social frailty is associated with physical functioning, cognition, and depression, and predicts mortality. The Journal of Nutrition, Health & Aging, 22(8), 989–995. https://doi.org/10.1007/s12603-018-1054-0
Mackenbach, J. P., Cavelaars, A. E. J. M., Kunst, A. E., & Groenhof, F. (2000). Socioeconomic inequalities in cardiovascular disease mortality. European Heart Journal, 21(14), 1141–1151. https://doi.org/10.1053/euhj.1999.1990
Makizako, H., Shimada, H., Doi, T., Tsutsumimoto, K., Hotta, R., Nakakubo, S., Makino, K., & Lee, S. (2018). Social frailty leads to the development of physical frailty among physically non-frail adults: a four-year follow-up longitudinal cohort study. International Journal of Environmental Research and Public Health, 15(3), 490. https://doi.org/10.3390/ijerph15030490
Makizako, H., Shimada, H., Tsutsumimoto, K., Lee, S., Doi, T., Nakakubo, S., Hotta, R., & Suzuki, T. (2015). Social frailty in community-dwelling older adults as a risk factor for disability. Journal of the American Medical Directors Association, 16(11), 1003.e7-1003.e11. https://doi.org/10.1016/j.jamda.2015.08.023
Maltese, G., Corsonello, A., Di Rosa, M., Soraci, L., Vitale, C., Corica, F., & Lattanzio, F. (2020). Frailty and COVID-19: a systematic scoping review. Journal of Clinical Medicine, 9(7), 2106. https://doi.org/10.3390/jcm9072106
Marie Joosten, D. (2015). Social work decision-making: need factors of older adults that affect outcomes of home- and community-based services. Health & Social Work, 40(1), 34–42. https://doi.org/10.1093/hsw/hlu043
Mazza, C., Ricci, E., Biondi, S., Colasanti, M., Ferracuti, S., Napoli, C., & Roma, P. (2020). A nationwide survey of psychological distress among Italian people during the COVID-19 pandemic: immediate psychological responses and associated factors. International Journal of Environmental Research and Public Health, 17(9), 3165. https://doi.org/10.3390/ijerph17093165
McLeroy, K. R., Bibeau, D., Steckler, A., & Glanz, K. (1988). An ecological perspective on health promotion programs. Health Education Quarterly, 15(4), 351–377. https://doi.org/10.1177/109019818801500401
Mehra, M. R., Desai, S. S., Kuy, S., Henry, T. D., & Patel, A. N. (2020). Cardiovascular disease, drug therapy, and mortality in Covid-19. New England Journal of Medicine, 382 (25), e102. https://doi.org/10.1056/NEJMoa2007621
Mello, A. de C., Engstrom, E. M., & Alves, L. C. (2014). Health-related and socio-demographic factors associated with frailty in the elderly: a systematic literature review. Cadernos de Saude Publica, 30, 1143–1168. https://doi.org/10.1590/0102-311x00148213
Mendes de Leon, C. F., Cagney, K. A., Bienias, J. L., Barnes, L. L., Skarupski, K. A., Scherr, P. A., & Evans, D. A. (2009). Neighborhood social cohesion and disorder in relation to walking in community-dwelling older adults: a multilevel analysis. Journal of Aging and Health, 21(1), 155–171. https://doi.org/10.1177/0898264308328650
Merchant, R. A., Chen, M. Z., Ng, S. E., Sandrasageran, S., & Wong, B. L. L. (2020). The role of a geriatrician has become even more important in an academic institution during COVID-19. The Journal of Nutrition, Health & Aging, 24(6), 681–682. https://doi.org/10.1007/s12603-020-1387-3
Mesas, A. E., Cavero-Redondo, I., Álvarez-Bueno, C., Sarriá Cabrera, M. A., Maffei de Andrade, S., Sequí-Dominguez, I., & Martínez-Vizcaíno, V. (2020). Predictors of in-hospital COVID-19 mortality: a comprehensive systematic review and meta-analysis exploring differences by age, sex and health conditions. PloS One, 15(11), e0241742. https://doi.org/10.1371/journal.pone.0241742
Middleton, A., Simpson, K. N., Bettger, J. P., & Bowden, M. G. (2020). COVID-19 pandemic and beyond: considerations and costs of telehealth exercise programs for older adults with functional impairments living at home—lessons learned from a pilot case study. Physical Therapy, 100(8), 1278–1288. https://doi.org/10.1093/ptj/pzaa089
Miles, A., Webb, T. E., Mcloughlin, B. C., Mannan, I., Rather, A., Knopp, P., & Davis, D. (2020). Outcomes from COVID-19 across the range of frailty: excess mortality in fitter older people. European geriatric medicine, 11(5), 851–855. https://doi.org/10.1007/s41999-020-00354-7
Milman, E., Lee, S. A., & Neimeyer, R. A. (2022). Social isolation and the mitigation of coronavirus anxiety: the mediating role of meaning. Death Studies, 46(1), 1–13. https://doi.org/10.1080/07481187.2020.1775362
Minahan, J., Falzarano, F., Yazdani, N., & Siedlecki, K. L. (2021). The COVID-19 pandemic and psychosocial outcomes across age through the stress and coping framework. The Gerontologist, 61(2), 228–239. https://doi.org/10.1093/geront/gnaa205
Mitnitski, A. B., Graham, J. E., Mogilner, A. J., & Rockwood, K. (2002). Frailty, fitness, and late-life mortality in relation to chronological and biological age. BMC Geriatrics, 2, 1. https://doi.org/10.1186/1471-2318-2-1
Mitnitski, A. B., Mogilner, A. J., & Rockwood, K. (2001). Accumulation of deficits as a proxy measure of aging. The Scientific World Journal, 1, 323–336. https://doi.org/10.1100/tsw.2001.58
Montero-Odasso, M., Hogan, D. B., Lam, R., Madden, K., MacKnight, C., Molnar, F., & Rockwood, K. (2020). Age alone is not adequate to determine health-care resource allocation during the COVID-19 pandemic. Canadian Geriatrics Journal, 23(1), 152–154. https://doi.org/10.5770/cgj.23.452
Moran, M., Van Cauwenberg, J., Hercky-Linnewiel, R., Cerin, E., Deforche, B., & Plaut, P. (2014). Understanding the relationships between the physical environment and physical activity in older adults: a systematic review of qualitative studies. The International Journal of Behavioral Nutrition and Physical Activity, 11, 79. https://doi.org/10.1186/1479-5868-11-79
Morley, J. E., Vellas, B., van Kan, G. A., Anker, S. D., Bauer, J. M., Bernabei, R., Cesari, M., Chumlea, W. C., Doehner, W., Evans, J., Fried, L. P., Guralnik, J. M., Katz, P. R., Malmstrom, T. K., McCarter, R. J., Gutierrez Robledo, L. M., Rockwood, K., von Haehling, S., Vandewoude, M. F., & Walston, J. (2013). Frailty consensus: a call to action. Journal of the American Medical Directors Association, 14(6), 392–397. https://doi.org/10.1016/j.jamda.2013.03.022
Mosier, C. I., & McQuitty, J. V. (1940). Methods of item validation and abacs for item-test correlation and critical ratio of upper-lower difference. Psychometrika, 5(1), 57–65. https://doi.org/10.1007/BF02288561
Mulasso, A., Roppolo, M., Gobbens, R. J., & Rabaglietti, E. (2017). Mobility, balance, and frailty in community‐dwelling older adults: what is the best 1‐year predictor of falls? Geriatrics & Gerontology International, 17(10), 1463–1469. https://doi.org/10.1111/ggi.12893
Nagai, K., Tamaki, K., Kusunoki, H., Wada, Y., Tsuji, S., Itoh, M., Sano, K., Amano, M., Hayashitani, S., Yokoyama, R., Yonezawa, R., Kamitani, T., & Shinmura, K. (2020). Physical frailty predicts the development of social frailty: a prospective cohort study. BMC Geriatrics, 20(1), 403. https://doi.org/10.1186/s12877-020-01814-2
Newman, M. G., & Zainal, N. H. (2020). The value of maintaining social connections for mental health in older people. The Lancet, 5(1), e12–e13. https://doi.org/10.1016/S2468-2667(19)30253-1
Nickel, C. H., Ruegg, M., Pargger, H., & Bingisser, R. (2020). Age, comorbidity, frailty status: Effects on disposition and resource allocation during the COVID-19 pandemic. Swiss Medical Weekly, 150, w20269. https://doi.org/10.4414/smw.2020.20269
Nourhashémi, F., Andrieu, S., Gillette-Guyonnet, S., Vellas, B., Albarède, J. L., & Grandjean, H. (2001). Instrumental activities of daily living as a potential marker of frailty: a study of 7364 community-dwelling elderly women (the EPIDOS Study). The Journals of Gerontology: Series A, 56(7), 448–453. https://doi.org/10.1093/gerona/56.7.M448
O'Caoimh, R., Galluzzo, L., Rodríguez-Laso, Á., Van der Heyden, J., Ranhoff, A. H., Lamprini-Koula, M., Ciutan, M., López-Samaniego, L., Carcaillon-Bentata, L., Kennelly, S., Liew, A., & work package 5 of the joint action advantage. (2018). Prevalence of frailty at population level in european advantage joint action member states: a systematic review and meta-analysis. Annali dell'Istituto superiore di sanita, 54(3), 226-238. https://doi.org/10.4415/ANN_18_03_10
Odum, E. P., & Barrett, G. W. (1971). Fundamentals of ecology (Vol. 3). Philadelphia: Saunders Philadelphia.
Op het Veld, L. P. M., van Rossum, E., Kempen, G. I. J. M., de Vet, H. C. W., Hajema, K., & Beurskens, A. J. H. M. (2015). Fried phenotype of frailty: cross-sectional comparison of three frailty stages on various health domains. BMC Geriatrics, 15, 77. https://doi.org/10.1186/s12877-015-0078-0
Pedersen, S. F., & Ho, Y.-C. (2020). SARS-CoV-2: a storm is raging. The Journal of Clinical Investigation, 130(5), 2202–2205. https://doi.org/10.1172/JCI137647
Peek, M. K., Howrey, B. T., Ternent, R. S., Ray, L. A., & Ottenbacher, K. J. (2012). Social support, stressors, and frailty among older Mexican American adults. The Journals of Gerontology: Series B, 67(6), 755–764. https://doi.org/10.1093/geronb/gbs081
Peters, L. L., Boter, H., Buskens, E., & Slaets, J. P. J. (2012). Measurement properties of the groningen frailty indicator in home-dwelling and institutionalized elderly people. Journal of the American Medical Directors Association, 13(6), 546–551. https://doi.org/10.1016/j.jamda.2012.04.007
Pfefferbaum, B., & North, C. S. (2020). Mental health and the COVID-19 pandemic. New England Journal of Medicine, 383(6), 510–512. https://doi.org/10.1056/NEJMp2008017
Pouso, S., Borja, Á., Fleming, L. E., Gómez-Baggethun, E., White, M. P., & Uyarra, M. C. (2021). Contact with blue-green spaces during the COVID-19 pandemic lockdown beneficial for mental health. Science of The Total Environment, 756, 143984. https://doi.org/10.1016/j.scitotenv.2020.143984
Pranata, R., Henrina, J., Lim, M. A., Lawrensia, S., Yonas, E., Vania, R., Huang, I., Lukito, A. A., Suastika, K., Kuswardhani, R. A. T., & Setiati, S. (2021). Clinical frailty scale and mortality in COVID-19: a systematic review and dose-response meta-analysis. Archives of Gerontology and Geriatrics, 93, 104324. https://doi.org/10.1016/j.archger.2020.104324
Preiser, R., Biggs, R., De Vos, A., & Folke, C. (2018). Social-ecological systems as complex adaptive systems: organizing principles for advancing research methods and approaches. Ecology and Society, 23(4). https://doi.org/10.5751/ES-10558-230446
Rackwitz, R. (2001). Reliability analysis—a review and some perspectives. Structural Safety, 23(4), 365–395. https://doi.org/10.1016/S0167-4730(02)00009-7
Renström, E. A., & Bäck, H. (2021). Emotions during the COVID‐19 pandemic: fear, anxiety, and anger as mediators between threats and policy support and political actions. Journal of Applied Social Psychology, 51(8), 861–877. https://doi.org/10.1111/jasp.12806
Rhodes, R. E., Brown, S. G., & McIntyre, C. A. (2006). Integrating the perceived neighborhood environment and the theory of planned behavior when predicting walking in a Canadian adult sample. American Journal of Health Promotion, 21(2), 110–118. https://doi.org/10.4278/0890-1171-21.2.110
Richardson, S., Hirsch, J. S., Narasimhan, M., Crawford, J. M., McGinn, T., Davidson, K. W., & and the Northwell COVID-19 Research Consortium. (2020). Presenting characteristics, comorbidities, and outcomes among 5700 patients hospitalized with COVID-19 in the New York City area. JAMA, 323(20), 2052–2059. https://doi.org/10.1001/jama.2020.6775
Robb, C. E., de Jager, C. A., Ahmadi-Abhari, S., Giannakopoulou, P., Udeh-Momoh, C., McKeand, J., Price, G., Car, J., Majeed, A., Ward, H., & Middleton, L. (2020). Associations of social isolation with anxiety and depression during the early COVID-19 pandemic: a survey of older adults in London, UK. Frontiers in Psychiatry, 11, 991. https://doi.org/10.3389/fpsyt.2020.591120
Rockwood, K. (2016). Conceptual models of frailty: accumulation of deficits. The Canadian Journal of Cardiology, 32(9), 1046–1050. https://doi.org/10.1016/j.cjca.2016.03.020
Rockwood, K., & Mitnitski, A. (2007). Frailty in relation to the accumulation of deficits. The Journals of Gerontology: Series A, 62(7), 722–727. https://doi.org/10.1093/gerona/62.7.722
Rockwood, K., & Mitnitski, A. (2011). Frailty defined by deficit accumulation and geriatric medicine defined by frailty. Clinics in Geriatric Medicine, 27(1), 17–26. https://doi.org/10.1016/j.cger.2010.08.008
Rockwood, K., Abeysundera, M. J., & Mitnitski, A. (2007). How should we grade frailty in nursing home patients? Journal of the American Medical Directors Association, 8(9), 595–603. https://doi.org/10.1016/j.jamda.2007.07.012
Rockwood, K., Fox, R. A., Stolee, P., Robertson, D., & Beattie, B. L. (1994). Frailty in elderly people: an evolving concept. CMAJ: Canadian Medical Association Journal = Journal de l’Association Medicale Canadienne, 150(4), 489–495.https://doi.org/10.1016/S0140-6736(12)62167-9
Rockwood, K., Mitnitski, A., Song, X., Steen, B., & Skoog, I. (2006). Long-term risks of death and institutionalization of elderly people in relation to deficit accumulation at age 70. Journal of the American Geriatrics Society, 54(6), 975–979. https://doi.org/10.1111/j.1532-5415.2006.00738.x
Rockwood, K., Song, X., MacKnight, C., Bergman, H., Hogan, D. B., McDowell, I., & Mitnitski, A. (2005). A global clinical measure of fitness and frailty in elderly people. Canadian Medical Association Journal, 173(5), 489–495. https://doi.org/10.1503/cmaj.050051
Rodriguez-Mañas, L., & Fried, L. P. (2015). Frailty in the clinical scenario. The Lancet, 385(9968), e7–e9. https://doi.org/10.1016/S0140-6736(14)61595-6
Rogers, E. M. (2010). Diffusion of innovations. New York: Simon and Schuster.
Rolfson, D. B., Majumdar, S. R., Tsuyuki, R. T., Tahir, A., & Rockwood, K. (2006). Validity and reliability of the Edmonton frail scale. Age and Ageing, 35(5), 526–529. https://doi.org/10.1093/ageing/afl041
Romero-Ortuno, R. (2011). The frailty instrument of the survey of health, ageing and retirement in europe (SHARE-FI) predicts mortality beyond age, comorbidities, disability, self-rated health, education, and depression. European Geriatric Medicine, 2(6), 323–326. https://doi.org/10.1016/j.eurger.2011.08.005
Romero-Ortuno, R., Walsh, C. D., Lawlor, B. A., & Kenny, R. A. (2010). A frailty instrument for primary care: findings from the survey of health, ageing and retirement in Europe (SHARE). BMC Geriatrics, 10, 57. https://doi.org/10.1186/1471-2318-10-57
Rosenberg, D. E., Kerr, J., Sallis, J. F., Norman, G. J., Calfas, K., & Patrick, K. (2012). Promoting walking among older adults living in retirement communities. Journal of Aging and Physical Activity, 20(3), 379–394. https://doi.org/10.1123/japa.20.3.379
Sablerolles, R. S. G., Lafeber, M., van Kempen, J. A. L., van de Loo, B. P. A., Boersma, E., Rietdijk, W. J. R., Polinder-Bos, H. A., Mooijaart, S. P., van der Kuy, H., Versmissen, J., Faes, M. C., Agnoletto, L., Aleman, J., Andreassi, S., Andrews, L., Ashfield, L., Bell, H., Bengaard, A., Berlinghini, S., … Zuppini, T. (2021). Association between clinical frailty scale score and hospital mortality in adult patients with COVID-19: an international, multicentre, retrospective, observational cohort study. The Lancet Healthy Longevity, 2(3), e163–e170. https://doi.org/10.1016/S2666-7568(21)00006-4
Sager, M. A., Rudberg, M. A., Jalaluddin, M., Franke, T., Inouye, S. K., Landefeld, C. S., Siebens, H., & Winograd, C. H. (1996). Hospital admission risk profile (harp): identifying older patients at risk for functional decline following acute medical illness and hospitalization. Journal of the American Geriatrics Society, 44(3), 251–257. https://doi.org/10.1111/j.1532-5415.1996.tb00910.x
Sallis, J. F., Owen, N., & Fisher, E. B. (2008). Ecological models of health behavior. In K. Glanz, B. K. Rimer, & K. Viswanath (Eds.), Health behavior and health education: Theory, research, and practice (pp. 465–485). Jossey-Bass. https://psycnet.apa.org/record/2008-17146-020
Salomaa, V., Miettinen, H., Niemelä, M., Ketonen, M., Mähönen, M., Immonen-Räihä, P., Lehto, S., Vuorenmaa, T., Koskinen, S., & Palomäki, P. (2001). Relation of socioeconomic position to the case fatality, prognosis, and treatment of myocardial infarction events; the FINMONICA MI Register Study. Journal of Epidemiology & Community Health, 55(7), 475–482. https://doi.org/10.1136/jech.55.7.475
Sanderson, W., & Scherbov, S. (2008). Rethinking age and aging. Washington, DC: Population Reference Bureau.
Santini, Z. I., Jose, P. E., York Cornwell, E., Koyanagi, A., Nielsen, L., Hinrichsen, C., Meilstrup, C., Madsen, K. R., & Koushede, V. (2020). Social disconnectedness, perceived isolation, and symptoms of depression and anxiety among older Americans (NSHAP): A longitudinal mediation analysis. The Lancet Public Health, 5(1), e62–e70. https://doi.org/10.1016/S2468-2667(19)30230-0
Saraiva, M. D., Apolinario, D., Avelino-Silva, T. J., De Assis Moura Tavares, C., Gattás-Vernaglia, I. F., Marques Fernandes, C., Rabelo, L. M., Tavares Fernandes Yamaguti, S., Karnakis, T., Kalil-Filho, R., Jacob-Filho, W., & Romero Aliberti, M. J. (2021). The impact of frailty on the relationship between life-space mobility and quality of life in older adults during the COVID-19 pandemic. The Journal of Nutrition, Health & Aging, 25(4), 440–447. https://doi.org/10.1007/s12603-020-1532-z
Schölmerich, V. L. N., & Kawachi, I. (2016). Translating the socio-ecological perspective into multilevel interventions: gaps between theory and practice. Health Education & Behavior: The Official Publication of the Society for Public Health Education, 43(1), 17–20. https://doi.org/10.1177/1090198115605309
Searle, S. D., Mitnitski, A., Gahbauer, E. A., Gill, T. M., & Rockwood, K. (2008). A standard procedure for creating a frailty index. BMC Geriatrics, 8(1), 24. https://doi.org/10.1186/1471-2318-8-24
Seo, Y., Kim, M., Shim, H., & Won, C. W. (2021). Differences in the association of neighborhood environment with physical frailty between urban and rural older adults: the Korean frailty and aging cohort study (KFACS). Journal of the American Medical Directors Association, 22(3), 590-597. https://doi.org/10.1016/j.jamda.2020.09.044
Shamliyan, T., Talley, K. M. C., Ramakrishnan, R., & Kane, R. L. (2013). Association of frailty with survival: a systematic literature review. Ageing Research Reviews, 12(2), 719–736. https://doi.org/10.1016/j.arr.2012.03.001
She, Q., Chen, B., Liu, W., Li, M., Zhao, W., & Wu, J. (2021). Frailty pathogenesis, assessment, and management in older adults with COVID-19. Frontiers in Medicine, 8, 694367. https://doi.org/10.3389/fmed.2021.694367
Shimada, H., Lee, S., Doi, T., Bae, S., Tsutsumimoto, K., & Arai, H. (2019). Prevalence of psychological frailty in Japan: NCGG-SGS as a Japanese national cohort study. Journal of Clinical Medicine, 8(10), E1554. https://doi.org/10.3390/jcm8101554
Shinohara, T., Saida, K., Tanaka, S., & Murayama, A. (2021). Association between frailty and changes in lifestyle and physical or psychological conditions among older adults affected by the coronavirus disease 2019 countermeasures in Japan. Geriatrics & Gerontology International, 21(1), 39–42. https://doi.org/10.1111/ggi.14092
Soga, M., Evans, M. J., Tsuchiya, K., & Fukano, Y. (2021). A room with a green view: the importance of nearby nature for mental health during the COVID‐19 pandemic. Ecological Applications, 31(2), e2248. https://doi.org/10.1002/eap.2248
Sønderskov, K. M., Dinesen, P. T., Santini, Z. I., & Østergaard, S. D. (2020). The depressive state of Denmark during the COVID-19 pandemic. Acta Neuropsychiatrica, 32(4), 226–228. https://doi.org/10.1017/neu.2020.15
Soysal, P., Veronese, N., Arik, F., Kalan, U., Smith, L., & Isik, A. T. (2019). Mini nutritional assessment scale-short form can be useful for frailty screening in older adults. Clinical Interventions in Aging, 14, 693. https://doi.org/10.2147/CIA.S196770
Spielberger, C. D. (1966). Theory and research on anxiety. Anxiety and behavior. Academic press. https://www.scirp.org/(S(i43dyn45teexjx455qlt3d2q))/reference/Reference sPapers. aspx?ReferenceID=1082142
Steinman, M. A., Perry, L., & Perissinotto, C. M. (2020). Meeting the care needs of older adults isolated at home during the COVID-19 pandemic. JAMA Internal Medicine, 180(6), 819–820. https://doi.org/ 10.1001/jamainternmed.2020.1661.
Steverink, N. (2001). Measuring frailty: developing and testing the GFI (Groningen Frailty Indicator). The Gerontologist, 41, 236. https://doi.org/10.1186/s12877-022-03437-1
Stokols, D. (1992). Establishing and maintaining healthy environments: toward a social ecology of health promotion. The American Psychologist, 47, 6–22. https://doi.org/10.1037//0003-066X.47.1.6
Stokols, D. (1996). Translating social ecological theory into guidelines for community health promotion. American Journal of Health Promotion, 10(4), 282–298. https://doi.org/10.4278/0890-1171-10.4.282
Szanton, S. L., Seplaki, C. L., Thorpe, R. J., Allen, J. K., & Fried, L. P. (2010). Socioeconomic status is associated with frailty: the Women’s Health and Aging Studies. Journal of Epidemiology & Community Health, 64(01), 63–67. https://doi.org/ 10.1136/jech.2008.078428.
Teo, N., Gao, Q., Nyunt, M. S. Z., Wee, S. L., & Ng, T.-P. (2017). Social frailty and functional disability: findings from the singapore longitudinal ageing studies. Journal of the American Medical Directors Association, 18(7), 637.e13-19. https://doi.org/10.1016/j.jamda.2017.04.015
Teo, N., Yeo, P. S., Gao, Q., Nyunt, M. S. Z., Foo, J. J., Wee, S. L., & Ng, T. P. (2019). A bio-psycho-social approach for frailty amongst Singaporean Chinese community-dwelling older adults – evidence from the Singapore longitudinal aging study. BMC Geriatrics, 19(1), 350. https://doi.org/10.1186/s12877-019-1367-9
Torales, J., O’Higgins, M., Castaldelli-Maia, J. M., & Ventriglio, A. (2020). The outbreak of COVID-19 coronavirus and its impact on global mental health. International Journal of Social Psychiatry, 66(4), 317–320. https://doi.org/10.1177/0020764020915212
Truog, R. D., Mitchell, C., & Daley, G. Q. (2020). The toughest triage—allocating ventilators in a pandemic. New England Journal of Medicine, 382(21), 1973–1975. https://doi.org/ 10.1056/NEJMp2005689
Tsutsumimoto, K., Doi, T., Makizako, H., Hotta, R., Nakakubo, S., Kim, M., Kurita, S., Suzuki, T., & Shimada, H. (2018). Social frailty has a stronger impact on the onset of depressive symptoms than physical frailty or cognitive impairment: a 4-year follow-up longitudinal cohort study. Journal of the American Medical Directors Association, 19(6), 504–510. https://doi.org/10.1016/j.jamda.2018.02.008
Tull, M. T., Edmonds, K. A., Scamaldo, K. M., Richmond, J. R., Rose, J. P., & Gratz, K. L. (2020). Psychological outcomes associated with stay-at-home orders and the perceived impact of COVID-19 on daily life. Psychiatry Research, 289, 113098. https://doi.org/10.1016/j.psychres.2020.113098
Turner, J., Eliot Hodgson, L., Leckie, T., Eade, L., & Ford-Dunn, S. (2020). A dual-center observational review of hospital-based palliative care in patients dying with COVID-19. Journal of Pain and Symptom Management, 60(2), e75–78. https://doi.org/10.1016/j.jpainsymman.2020.04.031
Van Assche, K., Verschraegen, G., Valentinov, V., & Gruezmacher, M. (2019). The social, the ecological, and the adaptive. Von Bertalanffy’s general systems theory and the adaptive governance of social-ecological systems. Systems Research and Behavioral Science, 36(3), 308–321. https://doi.org/10.1002/sres.2587
Van Cauwenberg, J., Clarys, P., De Bourdeaudhuij, I., Van Holle, V., Verté, D., De Witte, N., De Donder, L., Buffel, T., Dury, S., & Deforche, B. (2013). Older adults’ transportation walking: a cross-sectional study on the cumulative influence of physical environmental factors. International Journal of Health Geographics, 12, 37. https://doi.org/10.1186/1476-072X-12-37
Van Cauwenberg, J., Van Holle, V., Simons, D., Deridder, R., Clarys, P., Goubert, L., Nasar, J., Salmon, J., De Bourdeaudhuij, I., & Deforche, B. (2012). Environmental factors influencing older adults’ walking for transportation: a study using walk-along interviews. The International Journal of Behavioral Nutrition and Physical Activity, 9, 85. https://doi.org/10.1186/1479-5868-9-85
Van Riper, C. J., Thiel, A., Penker, M., Braito, M., Landon, A. C., Thomsen, J. M., & Tucker, C. M. (2018). Incorporating multilevel values into the social-ecological systems framework. Ecology and Society, 23(3). https://www.jstor.org/stable/26799147
Vaughan, L., Corbin, A. L., & Goveas, J. S. (2015). Depression and frailty in later life: a systematic review. Clinical Interventions Aging, 10, 1947–1958. https://doi.org/ 10.2147/CIA.S69632
Vellas, C., Delobel, P., De Souto Barreto, P., & Izopet, J. (2020). COVID-19, virology and geroscience: a perspective. The Journal of Nutrition, Health & Aging, 24(7), 685–691. https://doi.org/10.1007/s12603-020-1416-2
Vermeiren, S., Vella-Azzopardi, R., Beckwée, D., Habbig, A.-K., Scafoglieri, A., Jansen, B., Bautmans, I., Bautmans, I., Verté, D., Beyer, I., Petrovic, M., De Donder, L., Kardol, T., Rossi, G., Clarys, P., Scafoglieri, A., Cattrysse, E., de Hert, P., & Jansen, B. (2016). Frailty and the prediction of negative health outcomes: a meta-analysis. Journal of the American Medical Directors Association, 17(12), 1163. https://doi.org/10.1016/j.jamda.2016.09.010
Visser, M., Schaap, L. A., & Wijnhoven, H. A. H. (2020). Self-reported impact of the covid-19 pandemic on nutrition and physical activity behaviour in dutch older adults living independently. Nutrients, 12(12), 3708. https://doi.org/10.3390/nu12123708
Vygotsky, L. S. (1978). Socio-cultural theory. Mind in Society, 6, 52–58.
Wahl, H.-W., & Oswald, F. (2010). Environmental perspectives on ageing. In The SAGE Handbook of Social Gerontology. SAGE Publications Ltd. https://doi.org/10.4135/9781446200933
Wang, C., Pan, R., Wan, X., Tan, Y., Xu, L., Ho, C. S., & Ho, R. C. (2020). Immediate psychological responses and associated factors during the initial stage of the 2019 coronavirus disease (COVID-19) epidemic among the general population in China. International Journal of Environmental Research and Public Health, 17(5), E1729. https://doi.org/10.3390/ijerph17051729
Wang, P., Li, Y., & Wang, Q. (2021). Sarcopenia: an underlying treatment target during the COVID-19 pandemic. Nutrition, 84, 111104. https://doi.org/10.1016/j.nut.2020.111104
Whitson, H. E., Purser, J. L., & Cohen, H. J. (2007). Frailty thy name is ... phrailty? The Journals of Gerontology, 62(7), 728–730. https://doi.org/10.1093/gerona/62.7.728
Wiles, J. L., Leibing, A., Guberman, N., Reeve, J., & Allen, R. E. S. (2012). The meaning of “aging in place” to older people. The Gerontologist, 52(3), 357–366. https://doi.org/10.1093/geront/gnr098
Winett, R. A., King, A. C., & Altman, D. G. (1989). Health psychology and public health: An integrative approach. Oxford: Pergamon Press.
Woo, J., Goggins, W., Sham, A., & Ho, S. (2005). Social determinants of frailty. Gerontology, 51(6), 402–408. https://doi.org/10.1159/000088705
Woodside, A. G., Caldwell, M., & Spurr, R. (2006). Advancing ecological systems theory in lifestyle, leisure, and travel research. Journal of Travel Research, 44(3), 259–272. https://doi.org/10.1177/0047287505282945
World Health Organization. (2002). Active ageing: a policy framework (WHO/NMH/NPH/02.8). World Health Organization. https://apps.who.int/iris/handle/10665/67215
Xiu-Ying, H., Qian, C., Xiao-Dong, P., Xue-Mei, Z., & Chang-Quan, H. (2012). Living arrangements and risk for late life depression: a meta-analysis of published literature. The International Journal of Psychiatry in Medicine, 43(1), 19–34. https://doi.org/ 10.2190/PM.43.1.b
Xue, Q.-L. (2011). The frailty syndrome: definition and natural history. Clinics in Geriatric Medicine, 27(1), 1–15. https://doi.org/10.1016/j.cger.2010.08.009
Yamada, M., & Arai, H. (2018). Social frailty predicts incident disability and mortality among community-dwelling Japanese older adults. Journal of the American Medical Directors Association, 19(12), 1099–1103. https://doi.org/10.1016/j.jamda.2018.09.013
Yamada, M., Kimura, Y., Ishiyama, D., Otobe, Y., Suzuki, M., Koyama, S., Kikuchi, T., Kusumi, H., & Arai, H. (2020). Effect of the COVID-19 epidemic on physical activity in community-dwelling older adults in Japan: a cross-sectional online survey. The Journal of Nutrition, Health & Aging, 24(9), 948-950. https://doi.org/10.1007/s12603-020-1424-2
Yang, M., Yang, M., Shih, C., & Kawachi, I. (2002). Development and validation of an instrument to measure perceived neighbourhood quality in Taiwan. Journal of Epidemiology & Community Health, 56(7), 492–496. https://doi.org/10.1136/jech.56.7.492
Yang, Y., Li, W., Zhang, Q., Zhang, L., Cheung, T., & Xiang, Y.-T. (2020). Mental health services for older adults in China during the COVID-19 outbreak. The Lancet Psychiatry, 7(4), e19. https://doi.org/10.1016/S2215-0366(20)30079-1
Yannakoulia, M., Ntanasi, E., Anastasiou, C. A., & Scarmeas, N. (2017). Frailty and nutrition: from epidemiological and clinical evidence to potential mechanisms. Metabolism, 68, 64–76. https://doi.org/10.1016/j.metabol.2016.12.005
Ye, B., Gao, J., & Fu, H. (2018). Associations between lifestyle, physical and social environments, and frailty among Chinese older people: a multilevel analysis. BMC Geriatrics, 18(1), 314. https://doi.org/10.1186/s12877-018-0982-1
Yonas, E., Alwi, I., Pranata, R., Huang, I., Lim, M. A., Gutierrez, E. J., Yamin, M., Siswanto, B. B., & Virani, S. S. (2021). Effect of heart failure on the outcome of COVID-19—a meta analysis and systematic review. The American Journal of Emergency Medicine, 46, 204–211. https://doi.org/10.1016/j.ajem.2020.07.009
Youm, Y., Laumann, E. O., Ferraro, K. F., Waite, L. J., Kim, H. C., Park, Y.-R., Chu, S. H., Joo, W., & Lee, J. A. (2014). Social network properties and self-rated health in later life: comparisons from the Korean social life, health, and aging project and the national social life, health and aging project. BMC Geriatrics, 14(1), 102. https://doi.org/10.1186/1471-2318-14-102
Yu, W.-C., Chou, M.-Y., Peng, L.-N., Lin, Y.-T., Liang, C.-K., & Chen, L.-K. (2017). Synergistic effects of cognitive impairment on physical disability in all-cause mortality among men aged 80 years and over: Results from longitudinal older veterans study. PLoS One, 12(7), e0181741. https://doi.org/10.1371/journal.pone.0181741
Zastrow, C., Kirst-Ashman, K. K., & Hessenauer, S. L. (2019). Empowerment series: Understanding human behavior and the social environment. Boston: Cengage Learning.
Zhang, Y., Xu, X.-J., Lian, T.-Y., Huang, L.-F., Zeng, J.-M., Liang, D.-M., Yin, M.-J., Huang, J.-X., Xiu, L.-C., Yu, Z.-W., Li, Y.-L., Mao, C., & Ni, J.-D. (2020). Development of frailty subtypes and their associated risk factors among the community-dwelling elderly population. Aging, 12(2), 1128–1140. https://doi.org/10.18632/aging.102671
Zhao, W., Zhang, Y., Liu, X., Yue, J., Hou, L., Xia, X., Zuo, Z., Liu, Y., Jia, S., Dong, B., & Ge, N. (2020). Comorbid depressive and anxiety symptoms and frailty among older adults: Findings from the West China health and aging trend study. Journal of Affective Disorders, 277, 970–976. https://doi.org/10.1016/j.jad.2020.08.070
Zhavoronkov, A. (2020). Geroprotective and senoremediative strategies to reduce the comorbidity, infection rates, severity, and lethality in gerophilic and gerolavic infections. Aging, 12(8), 6492–6510. https://doi.org/10.18632/aging.102988
Zhou, F., Yu, T., Du, R., Fan, G., Liu, Y., Liu, Z., Xiang, J., Wang, Y., Song, B., Gu, X., Guan, L., Wei, Y., Li, H., Wu, X., Xu, J., Tu, S., Zhang, Y., Chen, H., & Cao, B. (2020). Clinical course and risk factors for mortality of adult inpatients with COVID-19 in Wuhan, China: a retrospective cohort study. The Lancet, 395(10229), 1054–1062. https://doi.org/10.1016/S0140-6736(20)30566-3