African Architecture Journal (Technical/Design focus) | 18 February 2008
Methodological Evaluation of Process-Control Systems in Ethiopian Construction Projects: A Randomized Field Trial on Cost-Effectiveness Analysis
N, e, g, u, s, s, e, A, b, e, r, a, ,, Y, a, r, e, d, T, e, s, f, a, y, e
Abstract
The construction sector in Ethiopia has experienced rapid growth but is characterized by inefficiencies and high costs. A randomized controlled trial was conducted to assess the impact of process-control systems on construction project costs. Data were collected from 10 randomly selected projects over two years. The results indicate that process-control systems led to a reduction in project costs by an average of 7.5% with a 95% confidence interval (6.2%–8.8%). Process-control systems significantly improved cost management in Ethiopian construction projects. Implementing and monitoring process-control systems should be prioritised to enhance efficiency and reduce costs. construction project, process-control systems, cost-effectiveness analysis, randomized field trial The maintenance outcome was modelled as $Y<em>{it}=\beta</em>0+\beta<em>1X</em>{it}+u<em>i+\varepsilon</em>{it}$, with robustness checked using heteroskedasticity-consistent errors.