Maternal care facilities in Nigeria are critical for improving maternal health outcomes. However, there is a need to evaluate and improve these systems through methodological assessments. This study employs a comprehensive search strategy across multiple databases to identify relevant studies. The selected papers are subjected to rigorous quality assessment and thematic analysis. Panel data methods are applied to analyse the longitudinal trends of clinical outcomes within different maternal care facilities in Nigeria. The panel-data estimation reveals significant variations in clinical outcome measures across different regions, with some facilities showing improvement over time. This review highlights the importance of consistent methodological approaches for evaluating maternal care systems and underscores the need for standardised data collection to improve outcomes. Future research should prioritise standardization of data collection methods and encourage longitudinal studies to monitor changes in clinical outcomes over time. Treatment effect was estimated with logit (pᵢ) =₀+^ Xᵢ, and uncertainty reported using confidence-interval based inference.
Nweke et al. (2000) studied this question.