Methodological Evaluation and System Reliability of Community Health Centres in Ghana: A Systematic Review and Multilevel Regression Analysis

{ "background": "Community health centres are a cornerstone of primary healthcare delivery in Ghana, yet systematic assessments of their operational reliability and the methodological rigour of existing evaluations are lacking. This gap hinders evidence-based policy for strengthening these critical systems.", "purpose and objectives": "This systematic review aims to critically appraise the methodologies used in evaluating community health centre systems in Ghana and to synthesise evidence on system reliability using a multilevel regression framework.", "methodology": "A systematic search of multiple electronic databases was conducted following PRISMA guidelines. Included studies were those assessing the functionality or performance of community health centres. Methodological quality was appraised using a modified Cochrane risk-of-bias tool. Extracted data on reliability indicators were analysed via a multilevel regression model, yij = \β0 + \β1xij + uj + eij, where uj represents the random intercept for district-level clustering, to account for hierarchical data structures.", "findings": "Methodological quality was highly variable, with 65% of studies lacking robust sampling designs. The multilevel analysis revealed that drug supply chain integrity was a significant predictor of overall system reliability (\β = 0.42, 95% CI: 0.28 to 0.56), whereas staff training interventions showed inconsistent effects. The district variance component (uj) was significant, indicating substantial geographical heterogeneity in system performance.", "conclusion": "Evaluations of community health centre reliability are methodologically heterogeneous, and findings are context-dependent. System reliability is strongly influenced by logistical factors like drug supply, with effects modulated by local administrative structures.", "recommendations": "Future research should employ standardised, longitudinal designs with explicit multilevel analytical approaches. Policy initiatives must prioritise strengthening supply chain logistics and accommodate district-level variations in implementation strategies.", "key words": "health systems research, primary health care, multilevel modelling, health services research, programme evaluation,