Background

Medication adherence is a key strategy in managing hypertension, as suboptimal blood pressure control can worsen disease progression and increase the risk of long-term cardiovascular complications. Several factors, including social support, may influence medication adherence. Objective: We aimed to determine the prevalence of good medication adherence, its association with social support, and other associated factors among hypertensive patients who attended a primary care clinic in Selangor. Methods: A cross-sectional study involving Malaysian adults aged 18 and above with hypertension who visited a public primary care clinic in Klang, was conducted using consecutive sampling from January 8 2024 to February 16, 2024. Participants completed a self-administered questionnaire, which included an assessment of medication adherence using the Malaysia Medication Adherence Assessment Tool (MyMAAT) and social support using the Multidimensional Scale of Perceived Social Support (MSPSS). All analyses were performed using SPSS version 29. Results: The study included 322 hypertensive patients, with 43.5% demonstrating good medication adherence. Most participants were female (58.4%), with a median age of 62 years (IQR 15). Key predictors of good adherence were living with family (aOR 4.14, p=0.046), no family history of hypertension (aOR 2.15, p=0.013), and strong perceived social support from significant others (aOR 2.84, p < 0.001).. Conclusion: Medication adherence rates remain relatively low, highlighting the need for targeted interventions in primary care. Efforts should focus on key factors like living conditions, family history of hypertension, and social support from significant others.