{ "background": "District hospitals are critical nodes in healthcare delivery, yet robust methodologies for quantifying the reliability of their integrated systems—encompassing clinical, logistical, and administrative functions—are lacking. This methodological gap hinders evidence-based interventions to strengthen health system performance.", "purpose and objectives": "This study aimed to develop and evaluate a novel methodological framework for assessing district hospital system reliability. The primary objective was to test the efficacy of specific analytical interventions, including multilevel modelling, in generating more precise and actionable reliability metrics.", "methodology": "We conducted an intervention study across a nationally representative sample of district hospitals. System reliability was operationalised via a composite index derived from routine service data. The core methodological intervention was the application of a three-level hierarchical linear model: $y{ijk} = \\beta0 + u{0jk} + v{0k} + \\epsilon{ijk}$, where $i$, $j$, and $k$ index observations, hospitals, and districts, respectively. Model robustness was assessed using cluster-robust standard errors.", "findings": "The multilevel regression intervention significantly improved the precision of reliability estimates, accounting for 42% of the variance previously attributed to error in conventional analyses. A key concrete result is that hospital-level random effects ($u{0jk}$) were significantly heterogeneous (p < 0.001), revealing substantial inter-hospital performance differences masked by aggregate statistics. The methodological approach successfully identified specific subsystems, notably pharmaceutical logistics, as primary drivers of unreliability.", "conclusion": "The applied multilevel modelling framework provides a superior methodological tool for diagnosing district hospital system reliability, moving beyond descriptive averages to identify specific leverage points for improvement.", "recommendations": "Health system researchers should adopt multilevel regression techniques to partition variance and identify contextual determinants of performance. Policymakers should mandate the collection of standardised, subsystem-specific data to facilitate such analyses.", "key words": "health systems research, multilevel modelling, reliability analysis, district hospitals, performance measurement,