District hospitals in Rwanda are crucial for healthcare delivery but lack standardised operational protocols. A meta-analysis approach was employed to synthesize data from multiple randomized controlled trials conducted across different districts. Statistical models were used to analyse yield improvements, accounting for potential confounders such as socioeconomic factors and healthcare infrastructure. Randomized field trial results indicated a significant increase in patient throughput by 15% (95% CI: 8%, 22%) when standard operating procedures were implemented compared to control districts. The randomized trials validated the effectiveness of standardised operational protocols, demonstrating substantial yield improvements. District health authorities should implement and monitor these protocols rigorously to sustain yield gains. district hospitals, Rwanda, randomized field trial, medical efficiency, yield improvement Treatment effect was estimated with $\text{logit}(p_i)=\beta_0+\beta^\top X_i$, and uncertainty reported using confidence-interval based inference.