Validation of the Arabic Version of General Medication Adherence Scale in Sudanese Patients with Diabetes Mellitus

• Published in: Risk management and healthcare policy Vol. 14; p. 4235
• Main Authors: Mahmoud, Mansour Adam, Islam, Md Ashraful, Ahmed, Malaz, Bashir, Randa, Ibrahim, Romisa, Al-Nemiri, Shahd, Babiker, Ethar, Mutasim, Neven, Alolayan, Sultan Othman, Al Thagfan, Sultan, Ahmed, Samrein B.M, Sales, Ibrahim, Hassali, Mohamed Azmi, Alahmadi, Yaser, Yousif, Mirghani A
• Format: Journal Article
• Language: English
• Published: Dove Medical Press Limited 31-10-2021
• Subjects: Analysis; Chronic diseases; Diabetics; Medical research; Medicine, Experimental; Patient compliance; Type 2 diabetes; Saudi Arabia; Sudan
• ISSN: 1179-1594; 1179-1594
• DOI: 10.2147/RMHRS325184

Objective: The aim of this study was to validate the Arabic version of General Medication Adherence Scale (GMAS) in Sudanese patients with type 2 diabetes mellitus (T2DM). Methods: A 3-month cross-sectional study was conducted among patients with T2DM at A1-Daraja Health Center, located in Wad Medani, Sudan. A convenient sample of patients was selected, and the study sample size was calculated using the item response ratio. Factorial, known group, and construct validities were determined. Internal consistency and reliability were also determined. Results: Responses were provided by 500 patients. The average medication adherence score was 30 (median 31). The normed fit index (NFI) was 0.950, the comparative fit index (CFI) was 0.963, the incremental fit index (IFI) was 0.963, and the root-mean-square error of approximation (RMSEA) was 0.071. The results from these fit indices indicated a good model. Factorial, known group and construct validities were all established. A significant association was found between adherence score and age (P = 0.03) since a larger proportion of older patients were found to have high adherence compared to patients in other age groups. The reliability (a) of the questionnaire was 0.834. Conclusion: The Arabic version of GMAS was validated in Sudanese patients with T2DM making it a suitable scale to be used in this population. Keywords: medication adherence, patient compliance, medication persistence, chronic illness, Sudan