Revisiting Quasi-Experimental Design in Off-Grid Communities: A Replication Study in Ghana

This study revisits a quasi-experimental design previously applied to assess risk reduction strategies in off-grid communities in Ghana. A replication study was conducted using a quasi-experimental design with matched comparison groups. The analysis included regression models to estimate causal effects, accounting for potential confounders. An observed effect size of 0.52 (95% CI: [0.31, 0.74]) suggests that the intervention was significantly effective in reducing risk factors among off-grid communities compared to control groups. The findings confirm the effectiveness of the original quasi-experimental design for evaluating off-grid community systems and their impact on risk reduction. Future research should consider expanding the replication study to include additional variables and contexts, enhancing generalizability. The empirical specification follows $Y=\beta_0+\beta^\top X+\varepsilon$, and inference is reported with uncertainty-aware statistical criteria.