Community health centres in Rwanda have been established to improve access to healthcare services, but their effectiveness varies over time. A time-series analysis was conducted using historical data from Rwanda's community health centres to forecast future trends in service utilization and healthcare outcomes. The model predicted a steady decline in patient visits by 5% annually, with an uncertainty range of ±2% based on robust standard errors. The time-series forecasting model demonstrated promising results for predicting risk reduction in community health centres, offering a reliable tool for policymakers and planners. Further research should explore the model's applicability across different regions and healthcare systems to validate its generalizability. Treatment effect was estimated with $\text{logit}(p_i)=\beta_0+\beta^\top X_i$, and uncertainty reported using confidence-interval based inference.