African Structural Engineering | 16 January 2009
Panel Data Estimation for Yield Improvement in Municipal Infrastructure Assets Systems in Nigeria: A Methodological Evaluation
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Abstract
This study focuses on municipal infrastructure assets systems in Nigeria, aiming to evaluate methods for improving yield. Panel data was collected over a period from to , covering 5 major cities in Nigeria. A fixed effects model is used to estimate yields, accounting for both time-invariant and time-varying factors affecting infrastructure systems. The panel analysis revealed that investment in maintenance and upgrading had a significant positive impact on yield improvement by an average of 12% across the sampled cities, with robust standard errors indicating statistical significance. This study confirms the effectiveness of using panel data estimation for assessing municipal infrastructure asset performance and recommends its adoption as a methodological tool for future research in Nigeria. Policy makers should consider incorporating maintenance and upgrading investments into their planning frameworks to improve municipal infrastructure yield. Municipal Infrastructure, Panel Data Estimation, Yield Improvement, Fixed Effects Model 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.