designing and psychometric evaluation of breast self-examination behavior predicting scale (bsebps)

Background: breast cancer is a public health challenge in most populations and a cause of morbidity and mortality worldwide. lack of reliable and valid tools for assessing predicting factors, which influence on breast self-examination behavior of iranian women, is obvious. this study aimed at designing and evaluating the psychometric properties of this instrument. objectives: the purpose of this study was psychometric validation health action process approach (hapa) scale for prediction of breast self-examination behavior among iranian women over 40 years. methods: in this cross sectional study, the participants were registeredwomen40 years and older in urban health centers in tehran, iran. the 200 subjects were selected by multi-stage cluster sampling. content and face validity have been verified by a panel of experts and participants. using exploratory and structural equation modeling confirmatory factor analyses was conducted construct validity. results: using explanatory factor analysis, 8 factors of health action process approach model were identified with appropriate variance explained (67.18%). the hapa had an acceptable fit to the observations (2 = 2.21, df = 3, 2/df = 1.35, p < 0.001, rmsea = 0.049 (ci = 0.044, 0.056; agfi = 0.90; p = 0.452; pgfi = 0.13). conclusions: the results of the present study suggested an initial for validity and reliability of the hapa-based breast selfexamination among iranian women.