Translation and evaluation of psychometric properties of the Persian version of the Hypertension Self-Care Activity Level Effects (H-SCALE)

BACKGROUND & OBJECTIVES: Hypertension is a major cause of cardiovascular disease and premature death worldwide. Managing hypertension through self-care practices is considered one of the most effective strategies. However, to accurately assess the self-care status of individuals with hypertension, a valid and reliable tool is necessary. This study aimed to evaluate the psychometric properties of the Persian version of the Hypertension Self-Care Activity Level Effects Questionnaire. METHODS: Present methodological study was conducted on 218 patients with hypertension visiting the Clinic of Qom educational and medical centers. Subjects were selected with convenience sampling. Data were collected using the H-SCALE, and a demographic questionnaire. The translation was done from the recommended backward-forward method according to the WHO protocol. After that, face and content validity were applied, along with construct validity involving a comparison of known groups and confirmatory factor analysis. To test reliability, Cronbach's alpha was used. Data analysis was performed by SPSS and smart-PLS software. RESULTS: The factor loadings of the self-care behaviors questionnaire were significant in all constructs, and were higher than 0.5 except for three items. The known-groups method showed that the self-care score of patients with controlled blood pressure was significantly higher than those with uncontrolled blood pressure. The extent of average variance extracted (AVE) of the majority of the constructs in the questionnaire was greater than 0.5 and, the composite reliability was greater than the AVE, indicating a good convergent validity. The divergent validity of the questionnaire was confirmed using the Fornell-Larcker criterion and the heterotrait-monotrait ratio (HTMT). Cronbach's alpha coefficient, combined reliability, and communalities index were optimal. CONCLUSION: According to research findings, the Persian version of the questionnaire has good validity and reliability that can be used as a tool to measure the level of self-care of hypertension by health care providers.