The eight-item Morisky Medication Adherence Scale MMAS: Translation and validation of the Malaysian version

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• 作者：Harith Kh. Al-Qazaz ; Mohamed A. Hassali ; Asrul A. Shafie ; Syed A. Sulaiman ; Shameni Sundram ; Donald E. Morisky
• 关键词：Type 2 diabetes ; Adherence ; Validation ; Morisky scale
• 刊名：Diabetes Research and Clinical Practice
• 出版年：2010
• 出版时间：November 2010
• 年：2010
• 卷：90
• 期：2
• 页码：216-221
• 全文大小：202 K

文摘

Aims

To translate and examine the psychometric properties of the Malaysian version of the Morisky Medication Adherence Scale (MMAS) among patients with type 2 diabetes.

Methods

A standard “forward–backward” procedure was used to translate MMAS into Malay language. It was later validated on a convenience sample of 223 type 2 diabetes outpatients between May and September 2009. Reliability was tested for internal consistency. Validity was confirmed using convergent and known group validity.

Results

Employing the recommended scoring method, the mean ± SD of MMAS scores was 6.13 ± 1.72. Moderate internal consistency was found (Cronbach's α = 0.675), the test–retest reliability value was 0.816 (p < 0.001). A positive correlation between the eight- and four-item MMAS was found (r = 0.792; p < 0.01). A significant relationship between MMAS categories and HbA1c categories (χ² = 20.261; p ≥ 0.001) was found. The MMAS sensitivity and specificity, with positive and negative predictive values were 77.61 % , 45.37 % , 46.84 % and 76.56 % , respectively.

Conclusions

The findings of this validation study indicate that the Malaysian version of the MMAS is a reliable and valid measure of medication adherence which can now be used.