Abstract
No suitable scale has been identified in literature that comprehensively measure self-efficacy of Pakistani breast cancer patients. The study aimed to develop a self-efficacy scale in Urdu language and determine its dimensions. The scale was developed with input from experts and literature. It was administered, in cross-sectional phase of two pilot studies, on breast cancer patients receiving chemotherapy. Post hoc internal consistency reliability was computed and principal component analysis (PCA) was performed. U-SES comprised 17 questions. PCA revealed a total of five factors explaining cumulative variance of 68.7%. These factors were self-confidence, faith, coping, optimism, and decision making. Post hoc internal consistency (Cronbach's alpha) value was high (∞ = 0.87). The self-efficacy scale has acceptable validity and reliability and has potential to obtain information related to self-efficacy of cancer patients receiving chemotherapy.
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