Development and study of self‑efficacy scale in medication adherence among Iranian patients with hypertension
نویسندگان
1 Department of Community Medicine, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran,
2
3 Department of Health Education and Health Promotion, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran,
4 Department of Public Health, Faculty of Health, Qom University of Medical Sciences, Qom, Iran
doi
چکیده
BACKGROUND: This study was aimed at developing and studying the scale of self‑efficacy inadherence to treatment in Iranian patients with hypertension.METHODS: A mix‑method study was conducted on the two stages: in the first phase, a qualitativestudy was done using content analysis through deep and semi‑structured interviews. After dataanalysis, the draft of tool was prepared. Items in the draft were selected based on the extractedconcepts. In the second phase, validity and reliability of the instrument were implemented using aquantitative study. The prepared instrument in the first phase was studied among 612 participants. Totest the construct validity and internal consistency, exploratory factor analysis and Cronbach’s alphawere used, respectively. To study the validity of the final scale, the average score of self‑efficacy inpatients with controlled hypertension were compared with patients with uncontrolled hypertension.RESULTS: In overall, 16 patients were interviewed. Twenty‑six items were developed to assessdifferent concepts of self‑efficacy. Concept‑related items were extracted from interviews to studythe face validity of the tool from patient’s point of view. Four items were deleted because scored0.79 in content validity. The mean of questionnaire content validity was 0.85. Items were collectedin two factors with an eigenvalue >1. Four items were deleted with load factor <0.4. Reliability was0.84 for the entire instrument.CONCLUSION: Self‑efficacy scale in patients with hypertension is a valid and reliable instrument thatcan effectively evaluate the self‑efficacy in medication adherence in the management of hypertension.
