African Computational Statistics (Technology/Maths) | 27 April 2007
Methodological Evaluation of Manufacturing Plant Systems in Tanzania Using Difference-in-Differences Approach
K, h, a, l, i, d, M, u, h, i, d, d, i, n
Abstract
This Data Descriptor focuses on the methodological evaluation of manufacturing plant systems in Tanzania, employing a Difference-in-Differences (DiD) approach to assess cost-effectiveness. A Difference-in-Differences model was applied, accounting for pre-intervention and post-intervention periods. Control variables were included to mitigate potential confounding factors. The DiD approach showed a significant reduction in operational costs by 15% (p < .05) after implementing new systems, indicating the effectiveness of these systems. The findings suggest that the DiD model is robust for measuring cost-effectiveness in Tanzanian manufacturing environments. Manufacturing companies should consider adopting similar methodologies to evaluate and implement system improvements. Difference-in-Differences, Manufacturing Systems, Cost-Effectiveness, Tanzania 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.