Field trial evaluates cost-effectiveness of depot systems in Ghana, suggesting system optimization strategies.
Depot systems play a critical role in transport maintenance across Ghana, yet their effectiveness is not well understood. A randomized field trial was conducted with a sample of depots across various regions of Ghana. Depot performance metrics were collected over a period of one year using standardised assessment tools. Data analysis included statistical testing for differences in maintenance outcomes between depots with varying systems, employing regression models to account for potential confounding variables. Depot A demonstrated superior repair times (mean reduction of 20% compared to Depot B), while achieving comparable overall cost-efficiencies. The randomized field trial provided empirical evidence on the comparative effectiveness of transport maintenance depots in Ghana, offering insights into system optimization strategies. Based on findings, recommendations for depot management and future research directions are proposed. The maintenance outcome was modelled as Yᵢₜ=β₀+β₁Xᵢₜ+uᵢ+εᵢₜ, with robustness checked using heteroskedasticity-consistent errors.
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Ameyaw et al. (2014) studied this question.
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