THE EFFECTIVENESS OF PATIENT EDUCATION INTERVENTIONS ON HEALTH OUTCOMES AND HEALTH LITERACY: A SYSTEMATIC REVIEW AND META-ANALYSIS

Abstract

Background Chronic diseases, affecting billions globally, necessitate effective self-management strategies to improve health outcomes and health literacy, defined as the ability to access, understand, and apply health information. Patient education interventions, including therapeutic patient education (TPE), aim to empower patients but require updated evidence syntheses to quantify their impact across diverse outcomes and populations. Methodology Following PRISMA 2020 guidelines, we searched PubMed, Web of Science, CINAHL, PsycINFO, Cochrane, Embase, and Scopus (inception to August 2025) for randomized controlled trials (RCTs) of patient education programs in adults (≥18 years) with chronic diseases. Outcomes included biomedical (e.g., HbA1c), psychological (e.g., self-efficacy), adherence, and health literacy. Two reviewers screened studies, extracted data, and assessed risk of bias (Cochrane RoB 2.0). Random-effects meta-analyses calculated standardized mean differences (SMD), with subgroup analyses by disease, delivery agent, format, and participant demographics. Heterogeneity (I²), publication bias (Egger’s test), and evidence certainty (GRADE) were evaluated. Results From 6,245 records, 512 RCTs (n=152,340) were included, spanning cardiovascular (29%), metabolic (26%), and other diseases. Interventions, mostly allied health-led (56%), averaged 6 months, focusing on disease management (93%) and coping (96%). Pooled effects showed SMD=0.52 (95% CI: 0.42–0.62; I²=82%; high certainty) for health outcomes (biomedical SMD=0.48; psychological SMD=-0.41), SMD=0.68 (95% CI: 0.45–0.91; I²=75%; moderate certainty) for adherence, and SMD=1.15 (95% CI: 0.75–1.55; I²=88%; moderate certainty) for health literacy. Cardiovascular diseases (SMD=0.62) and interactive formats outperformed others; older adults (>65) had smaller literacy gains (SMD=0.92 vs. 1.28). Publication bias was noted but did not alter the significance. Conclusion: Patient education interventions significantly enhance health outcomes and health literacy, particularly with interactive, allied health-led approaches. Scalable models can address chronic disease burdens, but heterogeneity and limited long-term data warrant further research on digital tools and cost-effectiveness.