Validation of diabetes medication adherence scale in the Lebanese population.

Diabetes Res Clin Pract

Clinical Pharmacy, Lebanon; Clinical and Epidemiological Research Laboratory, Faculty of Pharmacy, Lebanese University, Campus Hadath, Beirut, Lebanon. Electronic address:

Published: October 2019

AI Article Synopsis

  • - The study aimed to validate the Diabetes Medication Adherence Scale (DMAS-7) by comparing it to another established scale (LMAS-14) and identifying factors that influence medication adherence among diabetic patients in Lebanon.
  • - Conducted on 300 diabetic patients, results revealed a 33.7% adherence rate, with DMAS-7 showing good reliability and strong correlation with LMAS-14, indicating it might be a more effective tool for measuring adherence.
  • - The findings suggest that achieving optimal glycated hemoglobin levels and engaging in regular physical activity significantly enhance medication adherence, making DMAS-7 a valuable resource for improving diabetes management.

Article Abstract

Aim: To validate the Diabetes Medication Adherence Scale (DMAS-7), determine its concordance with another validated scales and to assess factors affecting medication adherence.

Methods: A cross-sectional study was conducted on a sample of Lebanese patients with diabetes using a questionnaire. The level of adherence was measured using the DMAS-7 and the Lebanese Medication Adherence Scale (LMAS-14). Bivariate and multivariate analyses were conducted, and the scale was validated in terms of reliability, predictive ability, and construct validity using SPSS version 19.

Results: Out of 300 eligible patients, the rate of adherence was 33.7%. Measures of validity showed good reliability (Cronbach alpha = 0.627), and good construct validity with LMAS-14 (Spearman's rho = 0.846; Cohen's kappa = 0.711). DMAS-7 was found to be both correlated with LMAS-14 (ICC average measure = 0.675; p-value <0.001) in addition to possessing a better predictive value. Thus, DMAS-7 showed to have good concordance and increased validity compared to LMAS-14. Having an optimal glycated hemoglobin (HbA1C) (OR = 0.779; p = 0.001) and performing regular physical activity (OR 2.328; p = 0.002) increased medication adherence.

Conclusion: The DMAS-7 showed to be reliable and valid instrument superior to LMAS-14 in predicting adherence levels to oral anti-diabetic medications, and thus can be used to achieve better glycemic outcomes.

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Source
http://dx.doi.org/10.1016/j.diabres.2019.107837DOI Listing

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