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Title: | Development and assessment of psychometric properties of model medication adherence (MMA) questionnaire to measure adherence to oral medication among patients with type 2 diabetes mellitus |
Authors: | Perera, S. Abeysena, C. |
Keywords: | Adherence Psychometrics Diabetes mellitus Factor analysis Questionnaire |
Issue Date: | 2023 |
Publisher: | College of Community Physicians of Sri Lanka |
Citation: | Journal of the College of Community Physicians of Sri Lanka.2023;29(1):6-18 |
Abstract: | INTRODUCTION: Medication adherence among patients with type 2 diabetes (DM) is assessed in everyday clinical practice. OBJECTIVES: To develop a questionnaire to measure adherence to oral medication among patients with DM and to assess its psychometric properties METHODS: The “Model Medication Adherence (MMA)” questionnaire was developed using the evidence from literature review and interviews with key stakeholders and patients. Answers were set on a five-point Likert scale that scored from 1 to 5, with 15-73 as the possible range of the total score. MMA was drafted in English and translated to Sinhala language by forward- backward translation. A descriptive cross-sectional study was carried out among adult patients with type 2 DM who attended clinics in Gampaha District General Hospital (DGH). A sample of 150 patients was recruited consecutively. The construct validity of MMA was assessed by Exploratory Factor Analysis (EFA) through Principal Component Analysis (PCA) with Varimax rotation RESULTS: EFA yielded four factors; sick role behaviour, autonomy, forgetfulness, and barriers that explained 64.36% of the variance of the total score of MMA. Internal consistency was acceptable (Cronbach’s alpha 0.73). The testretest reliability coefficient was 0.85 (p=0.01). Acceptability of the MMA was established by non-response items (none) and the time taken to complete (20 minutes). CONCLUSIONS & RECOMMENDATIONS: MMA is a simple valid questionnaire that adds a novel concept to the adherence literature; sick role and autonomy. It has a good factor structure with established construct validity and is recommended to be used in the clinical setting. |
Description: | Not Indexed |
URI: | http://repository.kln.ac.lk/handle/123456789/26584 |
ISSN: | 1391-3174 (Print) 2579-1451 (Electronic) |
Appears in Collections: | Journal/Magazine Articles |
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8576-1-31607-1-10-20230516.pdf | 587.97 kB | Adobe PDF | View/Open |
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