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Eur J Cardiovasc Nurs. 2009 Jun;8(2):129-36. doi: 10.1016/j.ejcnurse.2008.10.006. Epub 2008 Nov 28.

Reliability and validity of the Turkish adaptation of medication adherence self-efficacy scale in hypertensive patients.

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Ataturk University School of Nursing, Department of Public Health Nursing, 25240 Erzurum, Turkey.



Despite a lot of study related to medication adherence in hypertension, a major problem in research is the measurement of adherence.


To evaluate the reliability and validity of the Turkish version of the Medication Adherence Self-Efficacy Scale (MASES) among hypertensive patients in an outpatient setting in Turkey.


One hundred-forty adult patients, who are receiving medication for hypertension in the last one year, were included to study sample. MASES was translated using a back-translation technique, which includes the use of a panel of experts and interpreters to translate the items from the source language to the target language and then back-translate them to the source language. Psychometric evaluations of MASES-Turkish form were used construct validity; item analysis, principal component analysis and known group validity and internal consistency reliability (Chronbach's alpha)


Reliability coefficient of the Turkish adaptation of MASES was found 0.92, and item-total correlations ranged between 0.26 and 0.72. It was found that factor structure of the MASES-Turkish consisted with original instrument. Patients with uncontrolled hypertension had lower self-efficacy scores compared to those with normal blood pressure.

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