Socio-spatial equity analysis of relative wealth index and emergency obstetric care accessibility in urban Nigeria

Wong, K.L.M. and Banke-Thomas, A. and Olubodun, T. and Macharia, P.M. and Stanton, C. and Sundararajan, N. and Shah, Y. and Prasad, G. and Kansal, M. and Vispute, S. and Shekel, T. and Ogunyemi, O. and Gwacham-Anisiobi, U. and Wang, J. and Abejirinde, I.-O.O. and Makanga, P.T. and Afolabi, B.B. and Beňová, L. (2024) Socio-spatial equity analysis of relative wealth index and emergency obstetric care accessibility in urban Nigeria. communications medicine, 4 (1): 34. ISSN 2730-664X

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Abstract

Background: Better geographical accessibility to comprehensive emergency obstetric care (CEmOC) facilities can significantly improve pregnancy outcomes. However, with other factors, such as affordability critical for care access, it is important to explore accessibility across groups. We assessed CEmOC geographical accessibility by wealth status in the 15 most-populated Nigerian cities. Methods: We mapped city boundaries, verified and geocoded functional CEmOC facilities, and assembled population distribution for women of childbearing age and Meta’s Relative Wealth Index (RWI). We used the Google Maps Platform’s internal Directions Application Programming Interface to obtain driving times to public and private facilities. City-level median travel time (MTT) and number of CEmOC facilities reachable within 60 min were summarised for peak and non-peak hours per wealth quintile. The correlation between RWI and MTT to the nearest public CEmOC was calculated. Results: We show that MTT to the nearest public CEmOC facility is lowest in the wealthiest 20% in all cities, with the largest difference in MTT between the wealthiest 20% and least wealthy 20% seen in Onitsha (26 vs 81 min) and the smallest in Warri (20 vs 30 min). Similarly, the average number of public CEmOC facilities reachable within 60 min varies (11 among the wealthiest 20% and six among the least wealthy in Kano). In five cities, zero facilities are reachable under 60 min for the least wealthy 20%. Those who live in the suburbs particularly have poor accessibility to CEmOC facilities. Conclusions: Our findings show that the least wealthy mostly have poor accessibility to care. Interventions addressing CEmOC geographical accessibility targeting poor people are needed to address inequities in urban settings.

Item Type:
Journal Article
Journal or Publication Title:
communications medicine
ID Code:
237095
Deposited By:
Deposited On:
13 May 2026 13:10
Refereed?:
Yes
Published?:
Published
Last Modified:
13 May 2026 22:21