Methodological Evaluation of Process-Control Systems in Senegal: A Randomized Field Trial for Cost-Effectiveness Analysis

Process-control systems are critical for enhancing efficiency and quality in construction projects across Senegal. A randomized field trial was conducted to assess the performance metrics of different process-control systems under controlled conditions. Statistical analysis using linear regression models with robust standard errors was employed to determine cost-effectiveness ratios. In the trial, system A demonstrated a significant reduction in project costs by 15% compared to baseline levels (p < 0.05), indicating its superior cost-effectiveness. The randomized field trial confirmed that process-control systems can significantly reduce construction project expenses without compromising quality. Senegalese authorities should prioritise the implementation of system A in future projects based on this study's findings. The maintenance outcome was modelled as $Y_{it}=\beta_0+\beta_1X_{it}+u_i+\varepsilon_{it}$, with robustness checked using heteroskedasticity-consistent errors.