African Geophysics Journal (Earth Science focus) | 22 July 2008
Revisiting Quasi-Experimental Design in Off-Grid Communities: A Replication Study in Ghana
K, o, f, i, A, d, o, b, e, y, J, r, ,, Y, a, w, a, A, c, h, e, a, m, p, o, n, g, ,, F, r, a, n, k, A, n, y, i, d, o, h, o, ,, E, f, u, a, A, s, a, r, e
Abstract
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.