Background and purpose: Cultural adaptation of Medication Adherence Self-Efficacy Scale-Revised is lacking in the Arab population. This study tested the psychometric properties of the Arabic version of the Medication Adherence Self-Efficacy Scale-Revised.
Methods: The study included 199 Omani hypertensive patients. The scale was translated into Arabic. Reliability and construct and convergent validity were examined.
Results: Scale's reliability was α = .93. One factor was identified and explained about 57.5% of the variance. A new modified model with covariance suggested a better model fit. A significant relationship between the scale and Morisky medication adherence scale was found (r = .53, p < .001).
Conclusions: The Arabic version scale is reliable, valid, and could be applied in the clinical settings to improve medication adherence.
Keywords: Arabic; hypertension; medication adherence; psychometrics; self-efficacy; validity.
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