近年來，自我效力（self-efficacy）被認為是健康行為改變與維持的有力預測因子。本研究旨在建立並測試一研究工具，以評估連續可活動性腹膜透析（ CAPD ）病人的自我效力。 此研究工具之發展係以 Bandura 自我效力理論及 Orem 自我照顧理論為概念基礎。研究分二階段進行，階段一：研究工具之發展（ instrument development ），本研究查證與自我效力及 CAPD 相關文獻、與 CAPD 小組專家及 CAPD 病人討論、以及研究者臨床觀察來發展問卷項目（ item ）。問卷的內容效度由八位專家審閱確立之。階段二：本研究以內在一致性信度、三週間隔再測信度及因素分析來檢定 CAPD 自我效力量表心理計量。本研究採量性研究法， 立意取樣南部設有 CAPD 中心的五所教學醫院 122 位 CAPD 病人為研究對象。「 CAPD 自我效力量表」經由因素分析萃取出四個因素，分別為：持守例行的治療計畫、調整生活型態、處理異常狀況、護理導管及導管出口處。此四個因素可解釋的總變異量為 50.2 ％。而此四個因素頗能反映本研究設計所引用的 Orem 自我照顧理論中「健康偏差的自我照顧需求」之概念。顯示本量表具有良好的建構效度。在信度方面，「 CAPD 自我效力量表」之四個因素的 Cronbach's α與再測信度係數分別介於 0.76 ﹣ 0.94 與0.64 ﹣ 0.83。顯示本量表具有良好的內在一致性且具穩定性。本文亦就研究結果進行討論並提出對未來研究方向的建議。

　　　　　Self-efficacy had recently been documented as a strong predictor inchange and maintenance of health behavior. The aims of this study are to developand test an instrument to measure self-efficacy in patients undergoing CAPD.With Bandura's self-efficacy theory and Orem's self-care theory serving as theconceptual basis for instrument development, the study was divided into twophases, an instrument development phase and a validity and reliabilityassessment phase. In phase one, we reviewed self-efficacy and CAPD literature aswell as discussing with CAPD team members and CAPD patients serving as sourcesfor item generation. Eight experts reviewed the instrument for content validity.In phase two, the following psychometric properties of the CAPD Self-EfficacyScale were examined: internal consistency, reliability, three weeks test-retestreliability, and the dimensionality of the CAPD Self-Efficacy Scale revealed byfactor analysis.A quantitative research method was employed in this study. The purposivelyrecruited sample for this study consisted of 122 CAPD patients at the CAPDcenters of five teaching hospitals located in Southern Taiwan. Four factors ofCAPD Self-Efficacy Scale were identified following factor analysis: Stickingwith the routine therapeutic regimen, Adjusting life style, Managing abnormalconditions, Caring for the catheter exit site. These four factors explained50.2% of the total variance in CAPD self-efficacy. The coefficients ofCronbach's α and retest reliability in these four factors of CAPD self-efficacywere 0.76-0.94 and 0.64-0.83 respectively. Te results showed that the instrumenthad a satisfactory validity and reliability. Implications of these results forfuture research were discussed.