本論文在探討門診病人參加大腸癌篩檢及影響接受大腸鏡檢查行為意圖的相關因素。研究方法以方便取樣，採橫斷性研究設計，以臺北市某地區醫院50 ~74歲的門診病人為研究對象，收案時間為2021年10月1日至11月31日，有效樣本數244人。運用Champion's Health Belief Model Scale(CHBMS)及自我效能量表採結構式問卷進行調查，使用SPSS for Window 23.0版統計套裝軟體進行分析，以複迴歸分析其大腸鏡檢查認知、大腸癌篩檢健康信念、自我效能、健康動機、行動線索與接受大腸鏡檢查行為意圖的相關性及預測。研究結果如下：
1. 研究對象之大腸鏡檢查認知，85.7~86.9%的人認為定期糞便潛血檢查結果為陽性，早期接受大腸鏡檢查可早期發現大腸癌；73%的人瞭解大腸癌主要是由大腸內的腺瘤瘜肉病變造成；73.8%的人大腸鏡檢查的目的是早期發現大腸癌妥善治療，第一期五年的存活率高達90％以上，然而47.5%的人認為50歲以上至少每10年做一次大腸鏡檢查。
2. 研究對象之基本變項以年齡、教育程度、身體質量指數、臨床症狀者、糞便潛血檢查、大腸鏡檢查經驗及大腸鏡檢查認知與行為意圖有顯著關係。研究對象大腸癌篩檢健康信念之自覺罹患性、自覺嚴重性行動利益、自我效能、健康動機及行動線索與行為意圖呈顯著正相關，其中以行動障礙與行為意圖呈顯著負相關。
3. 研究對象之身體質量指數、大腸癌篩檢健康信念之自覺罹患性、行動利益、行動障礙、自我效能、健康動機能有效預測接受大腸鏡檢查行為意圖，並可解釋總變異量59.8%。其中主要最佳預測因子為自我效能。
最後依據研究結果對臨床推動大腸癌篩檢服務提出建議，以加強大腸鏡檢查確診行為及健康促進活動規劃等以及未來研究方向。

A procedure is to explore the outpatients participating in colorectal cancer screening and related factors that affect the behavioral intention of colonoscopy. The research method is convenient for sampling and adopts a cross-sectional research design. Outpatients aged 50 to 74 years old from a hospital in Taipei City are used as the research object. share. The Champion health belief model and self-efficacy scale were used to conduct surveys using structured questionnaires, and SPSS for Window version 23.0 statistical package software was used for analysis.
The results of the research are as follows:
1. Research subjects’ cognition of colonoscopy, 85.7~86.9% of people think that the results of regular fecal occult blood test are positive, and early colonoscopy can detect colorectal cancer early; 73% of people understand that colorectal cancer is mainly caused by the glands in the large intestine. The purpose of colonoscopy in 73.8% of people is to detect colorectal cancer early and properly treat it, and the first five-year survival rate is as high as 90%. However, 47.5% of people think that people over 50 have a colonoscopy at least every 10 years.
2. The basic variables of the study subjects were age, education level, body mass, clinical symptoms, fecal occult blood test, colonoscopy experience, and colonoscopy cognition and behavioral intention. The health beliefs of colorectal cancer screening were significantly positively correlated with behavioral intention, self-consciousness, perceived seriousness of action benefit, self-efficacy, health motivation and action cue, and behavioral intention was significantly negatively correlated with action disorder.
3. The body mass value of the research subjects, perceived riskiness of colorectal cancer screening health beliefs, action benefits, action barriers, self-efficacy, and health motivation can effectively predict the behavioral intention of undergoing colonoscopy, and can explain 59.8% of the total variance. The main best predictor was self-efficacy.
Finally, based on the research results, suggestions are made for clinical promotion of colorectal cancer screening services, so as to strengthen the diagnosis behavior of colonoscopy and future research directions.

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