Validation of the Kazakh-language version of the 8-item Morisky Medication Adherence Scale in patients with arterial hypertension.

BACKGROUND: The effectiveness of pharmacological therapies relies not only on the intrinsic efficacy of medicines, but also medication adherence, the extent to which patients follow their prescribed regimens. Patients with chronic conditions, such as hypertension, are at an increased risk of exhibiting poor medication adherence. Therefore, identifying patients with poor medication adherence is an important aspect of treatment success. RESEARCH DESIGN AND METHODS: The present study aims to translate and adapt the Morisky Medication Adherence Scale (MMAS-8), a self-reporting questionnaire to assess patients' adherence to prescribed therapy. RESULTS: The study validated the translated questionnaire and assessed its psychometric properties among a cohort of 400 patients with arterial hypertension in Turkistan region in southern Kazakhstan. The findings of the present study show that the Kazakh version of the MMAS-8 possesses high validity, reliability, and internal consistency, thereby confirming its appropriateness as a reliable tool for assessing medication adherence among patients with arterial hypertension in Kazakhstan. CONCLUSION: The psychometric properties of the Kazakh adaptation were comparable to those of the original English version and other validated non- English versions of the MMAS-8.