Medication Adherence of Persons with Type 2 Diabetes in Malaysia: A Scoping Review and Meta-Analysis

Non-adherence to Anti-diabetic Prescriptions Among Type 2 Diabetes Mellitus Patients in the Kurdistan Region of Iraq

BACKGROUND

Treatment adherence is a primary key in controlling diabetes disease. The study aims to determine the prevalence of treatment adherence in type 2 diabetes mellitus (T2DM) patients, investigate the potential influence of adherence on elevated blood glucose levels, and identify the key factors which play a role in non-adherence to the prescribed drugs.

METHOD

A cross-sectional study method was utilized to collect data from all T2DM patients at the Diabetic and Endocrine Centre and Shar Hospital in Sulaymaniyah city in the Kurdistan region of Iraq from February 2022 to April 2022. The data collection was performed through a structured questionnaire. The prevalence of drug adherence was assessed using the Morisky Medication-Taking Adherence Scale (4-item), and the glycated hemoglobin test (A1C) was used to determine the blood glucose level.

RESULT

A total of 300 participants were studied, and more than half of them (192; 64%) revealed that they did not adhere to their anti-diabetic medications. Non-adherence was significantly associated with higher A1C. Several barriers to non-adherence were identified as multiple medications, feeling the dose given is high, lack of finance, and side effects by 209 (70%), 116 (39%), 113 (38%), and 103 (34%), respectively.

CONCLUSION

The current study's result revealed that most T2DM patients have no adherence to their medication. This non-adherence is significantly linked to higher A1C levels, emphasizing the critical role of medication compliance in managing diabetes effectively. The study also sheds light on the multiple barriers such as taking multiple prescriptions, the perception that the dose is excessive, lack of finances, and experiencing side effects, which contribute to non-adherence among diabetes patients. These findings underscore the need for healthcare providers to address these barriers and develop tailored strategies to enhance medication adherence among individuals with diabetes.

The Mediating Effect of Self-Efficacy on the Relationship Between Medication Literacy and Medication Adherence Among Patients with Type 2 Diabetes

Background

Patients with type 2 diabetes have poor medication adherence. Medication literacy is one of the influencing factors of medication adherence among patients with type 2 diabetes. However, the mechanism by which medication literacy affects medication adherence among patients with type 2 diabetes is unclear. The aim of this study was to verify the mediating role of self-efficacy in the relationship between medication literacy and medication adherence.

Methods

A total of 402 patients with type 2 diabetes were enrolled in this study. The Chinese versions of the Medication Literacy Scale, the Self-Efficacy for Appropriate Medication Use Scale and the Morisky Medication Adherence Scale-8 were used in the survey. Pearson correlation analysis was used to find correlations among medication literacy, self-efficacy and medication adherence. The PROCESS macro (Version 4.1) with Model 4 for SPSS was used to verify the mediating role of self-efficacy.

Results

Twenty-four percent of the participants had poor medication adherence. Self-efficacy and medication literacy (r=0.499, p < 0.01) and medication adherence (r=0.499, p < 0.01) were significantly and positively correlated. Self-efficacy partially mediated the relationship between medication knowledge and medication adherence among patients with type 2 diabetes, accounting for 36.7% of the total effect.

Conclusion

Self-efficacy had a partial mediating effect on the relationship between medication literacy and medication adherence among patients with type 2 diabetes. Self-efficacy should be improved through effective measures to increase patients' confidence in adherence to antihyperglycemic drugs.

Prognostic Factor of Lower Limb Amputation among Diabetic Foot Ulcer Patients in North-East Peninsular Malaysia

Lower limb amputation (LLA) is a common complication of diabetic foot ulcer (DFU), which can lead to a higher 5-year mortality rate compared to all cancers combined. This study aimed to determine the prognostic factors of LLA among DFU patients in Kelantan from 2014 to 2018. A population-based study was conducted using secondary data obtained from the National Diabetic Registry (NDR). There were 362 cases that fulfilled the study criteria and were further analysed. The prognostic factors were determined by Multiple Cox Proportional Hazards Regression. There were 66 (18.2%) DFU patients who underwent LLA in this study, while 296 (81.8%) were censored. The results revealed that the factor leading to a higher risk of LLA was abnormal HDL-cholesterol levels (Adj. HR 2.18; 95% CI: 1.21, 3.92). Factors that led to a lower risk of LLA include DFU in patients aged 60 or more (Adj. HR 0.48; 95% CI: 0.27, 0.89) and obesity (Adj. HR 0.45; 95% CI: 0.22, 0.89). In conclusion, our model showed that abnormal HDL cholesterol was associated with a 2 times higher risk of LLA when adjusted for age and BMI. Any paradoxical phenomena should be addressed carefully to avoid wrong clinical decision making that can harm the patient.