Assessing the Impact of Pharmacist-Led Intervention on Medication Adherence in Elderly Patients

Thesis Abstract

Medication adherence remains a significant challenge among elderly patients, adversely affecting treatment outcomes and increasing healthcare costs globally. Despite the proliferation of pharmacological therapies, poor adherence persists due to factors such as complexity of medication regimens, cognitive decline, and inadequate patient education. Pharmacist-led interventions have demonstrated promise in improving adherence through personalized education, medication counseling, and adherence monitoring; however, empirical evidence evaluating their effectiveness within specific elderly populations in real-world settings remains limited. This study aims to assess the impact of pharmacist-led interventions on medication adherence among elderly patients and identify the key factors influencing adherence behaviors. The primary objectives include evaluating changes in medication adherence pre- and post-intervention, exploring patients’ perceptions and attitudes towards pharmacist-led counseling, and determining the relationship between demographic, clinical, and psychosocial variables and adherence levels. The study adopts a quantitative quasi-experimental design with a pre-test/post-test control group framework. The population comprises elderly patients aged 65 years and above attending outpatient clinics at three community pharmacies within the urban region. A sample of 200 participants will be randomly assigned to intervention and control groups, with 100 in each, to ensure adequate power for statistical analysis. Data collection will employ validated adherence measurement instruments such as the Morisky Medication Adherence Scale-8 (MMAS-8) and structured questionnaires assessing perceptions and barriers to adherence. Data will also be complemented by clinical records review for medication refill histories. Quantitative data will be analyzed using SPSS version 26. Descriptive statistics will characterize the demographic and clinical profile of participants. Inferential analysis will involve paired sample t-tests to compare adherence scores before and after intervention within groups, and independent sample t-tests to evaluate differences between groups. Multiple regression analysis will explore predictors of adherence, considering variables such as age, polypharmacy, cognitive status, and health literacy. Thematic analysis of open-ended responses will provide qualitative insights into patient perceptions, with NVivo software employed to identify recurring themes. Ethical approval will be secured from relevant institutional review boards, and informed consent obtained from all participants. Expected findings indicate that pharmacist-led interventions will significantly improve medication adherence among elderly patients, with adherence scores increasing by at least 25% in the intervention group compared to controls. It is anticipated that factors such as higher health literacy and better patient-pharmacist communication will correlate positively with adherence outcomes. Furthermore, qualitative insights are expected to reveal improved patient confidence in medication management and enhanced understanding of treatment regimens. These findings will contribute to the growing body of knowledge emphasizing the role of pharmacists in chronic disease management among aging populations and will support the integration of structured pharmacist-led adherence programs into routine care. The study’s main conclusion underscores the efficacy of targeted pharmacist interventions in improving medication adherence among elderly patients. Recommendations include implementing standardized pharmacist-led adherence counseling protocols, enhancing pharmacist training in geriatric care, and fostering multidisciplinary approaches to patient education. Future research should explore long-term adherence sustainability and cost-effectiveness analyses of pharmacist-led programs. Overall, the study aims to inform policymakers, healthcare providers, and pharmacy practice by demonstrating tangible benefits of pharmacist engagement in optimizing therapeutic outcomes for elderly populations.