本研究目的在探討醫院門診吸菸者之拒菸自我效能及其相關因素，以中部某醫學中心來門診就醫有吸菸之民眾為收案對象，研究工具為結構式問卷，包括拒菸自我效能、健康信念、菸害知識、尼古丁成癮程度，採立意取樣由個案自填方式收集資料。於2006年3月至4月共發出160份問卷，有效問卷156份，回收率97.5%。結果發現：健康信念越好、偶爾抽菸者、尼古丁成癮程度低、有戒菸意願者其拒菸自我效能較高(r=.155, p<.05, T=8.41, p<.004, F=6.76, p<.002, T=13.92, p<.000)具統計上顯著差異。本研究結果，除瞭解吸菸者拒菸自我效能之相關因素外，同時配合健康促進作為門診介入性衛教、戒菸課程或團體衛教課程規劃戒菸輔導業務推動之參考，進而有效的提高戒菸率。

The purposes of this research were to investigate self-efficacy and other contributing factors in smoking cessation of smokers in the outpatient clinic at a hospital. The research subjects for this study were smokers who went to a medical center in central Taiwan for outpatient services. A structured questionnaire was used as the research tool which collected data including self-efficacy in smoking cessation, health belief, knowledge of smoking hazard, and nicotine addiction level. Through purposive sampling, each participant completed the questionnaire. 160 questionnaires were sent out beginning from March to April in 2006; 156 copies were effective and the response rate was 97.5%. The findings were summarized as follows: Smokers with better health belief, occasional smokers, smokers with lower nicotine addiction, and smokers who desired to quit smoking had higher self-efficacy in smoking cessation (r=.155, p<.05, T=8.41, p<.004, F=6.76, p<.002, T=13.92, p<.000). The results of this research can help to understand contributing factors in smoking cessation of smokers, and when combined with health promotion, this can be used for education purposes in outpatient clinic, course design of smoking cessation or group health education, and smoking-cessation counseling.