Validity and Reliability of Self Efficacy of Health Practice Scale (SRAHPS) in Iranian Elderly

Self-efficacy is one of the main contributing factors in adoption of healthy behaviors Measure of self-efficacy measurement is important in health planning and interventions. Current study examined the reliability and validity of Selfe rated Abilities for Health Practice Scale for Health Practice Scale (SRAHPS) in the Iranian elderly. This is a descriptive study - applied that conducted on 310 elderly in Tehran. The applied instrument was SRAHPS questionnaire. Forward-Backward method used for the translation. CVI index and factor analysis were used to assess the content validity and construct validity, respectively. Ten percent of study population selected for test-retest reliability and have been interviewed following two weeks. Internal consistency of the questionnaire was tested by Cronbach's alpha and SPSS-18 software used for data analysis. The mean age of the participants was 67.1±5.9 years. Content validity Index of the questionnaire and all of its domains were greater than 0.82. Exploratory factor analysis resulted in a four-factor model explaining 63.89% of the variation. Confirmatory factor analysis also showed fitness of good. Cronbach's alpha for the instrument and its subscale was ranged between 0.73 to 0.84. The ICC for the instrument 0.76 and for its subscale ranged between 0.76 to 0.84. The present study showed that the SRAHPS questionnaire has acceptable reliability and validity for the assessment of self-efficacy in the Iranian elders.