References
Aboagye, R. G., et al. (2025). Skilled birth attendance and its associated factors in Chad and Nigeria: A multilevel analysis of DHS data. PLOS Global Public Health. https://doi.org/10.1371/journal.pgph.0005290 Adewemimo, A. W., Msuya, S. E., Olaniyan, C. T., & Adegoke, A. A. (2014). Utilisation of skilled birth attendance in Northern Nigeria: A cross-sectional survey. Midwifery, 30(1), e7–e13. https://doi.org/10.1016/j.midw.2013.03.001 Adewuyi, E. O., Auta, A., Adewuyi, M. I., Philip, A. A., Olutuase, V., & Zhao, Y. (2024). Antenatal care utilisation and receipt of its components in Nigeria: Assessing disparities between rural and urban areas — A nationwide population-based study. PLOS ONE. https://doi.org/10.1371/journal.pone.0307316 Adewuyi, E. O., Auta, A., Khanal, V., Bamidele, O. D., Akuoko, C. P., Adefemi, K., & Zhao, Y. (2021). Geographical and socioeconomic inequalities in the utilization of maternal healthcare services in Nigeria: 2003–2017. BMC Health Services Research, 20(1), 849. https://doi.org/10.1186/s12913-020-05700-w Afape, A. O., Azubuike, P. C., Ibikunle, O. O., & Barrow, A. (2024). Prevalence and determinants of skilled birth attendance among young women aged 15–24 years in Northern Nigeria: Evidence from multiple indicator cluster survey 2011 to 2021. BMC Public Health, 24(1), 2471. https://doi.org/10.1186/s12889-024-19976-8 Ahinkorah, B. O., Budu, E., Aboagye, R. G., Agbaglo, E., Arthur-Holmes, F., Adu, C., & Seidu, A.-A. (2020). Factors associated with skilled birth attendance in sub-Saharan Africa: Analysis of data from demographic and health surveys. BMC Pregnancy and Childbirth, 20(1), 732. https://doi.org/10.1186/s12884-020-03427-8 Al-Mujtaba, M., Cornelius, L. J., Galadanci, H., Erekaha, S., Okundaye, J. N., Adeyemi, O. A., & Sam-Agudu, N. A. (2016). Evaluating religious influences on the utilization of maternal health services among Muslim and Christian women in north-Central Nigeria. BioMed Research International, 2016, 1–8. https://doi.org/10.1155/2016/4158013 Amoakoh-Coleman, M., et al. (2023). Determinants of institutional delivery among young mothers aged 15–24 years in Nigeria: A multilevel analysis of the 2018 NDHS. BMC Pregnancy and Childbirth, 23(1). https://doi.org/10.1186/s12884-023-05601-8 Aremu, O., Lawoko, S., & Dalal, K. (2014). Determinants of maternal health care utilization in Nigeria: A multilevel approach. Nigerian Medical Journal, 55(1), 35–41. https://pmc.ncbi.nlm.nih.gov/articles/PMC3958146/ Asefa, A., Gebremedhin, S., Marthias, T., Nababan, H., Christou, A., Semaan, A., & Beňová, L. (2023). Wealth-based inequality in the continuum of maternal health service utilisation in 16 sub-Saharan African countries. International Journal for Equity in Health, 22(1), 203. https://doi.org/10.1186/s12939-023-02015-0 CFHI Initiative. (2026, March). Maternal health — access to care. https://www.cfhinitiative.org/maternal-health-access-to-care/ Commission on Social Determinants of Health . (2008). Closing the gap in a generation: Health equity through action on the social determinants of health. Final Report. World Health Organization. Dahiru, T., & Oche, O. M. (2015). Determinants of antenatal care, institutional delivery and postnatal care services utilization in Nigeria. Pan African Medical Journal, 21(1), 321. Dogbanya, G. (2025). Maternal mortality in Nigeria: Holding the line in uncertain times. Annals of Global Health, 91(1). https://annalsofglobalhealth.org/articles/4710 Erreygers, G. (2009). Correcting the concentration index. Journal of Health Economics, 28(2), 504–515. https://doi.org/10.1016/j.jhealeco.2008.02.003 Fagbamigbe, A. F., & Idemudia, E. S. (2015). Barriers to antenatal care use in Nigeria: Evidences from non-users and implications for maternal health programming. BMC Pregnancy and Childbirth, 15(1), 95. https://doi.org/10.1186/s12884-015-0527-y Federal Ministry of Health Nigeria . (2018). Second National Strategic Health Development Plan 2018–2022. Federal Government of Nigeria. FUDMA Journal of Sciences. (2025). Multilevel logistic analysis of infant mortality in Nigeria across the geopolitical zones. FUDMA Journal of Sciences, 9(1), article 4247. https://doi.org/10.33003/fjs Healthy Newborn Network. (2024). Nigeria: Maternal and newborn health country profile (March 2024 update). https://healthynewbornnetwork.org/resource/2023/nigeria-maternal- newborn-health-country-profile/ Imo, C. K. (2022). Influence of women's decision-making autonomy on antenatal care utilisation and institutional delivery services in Nigeria: Evidence from the Nigeria Demographic and Health Survey 2018. BMC Pregnancy and Childbirth, 22(1), 141. https://doi.org/10.1186/s12884-022-04458-z Journal of Global Health Reports. (2024). Closing the gap in maternal health access and quality through targeted investments in low-resource settings. Journal of Global Health Reports, 7, e2023070. https://doi.org/10.29392/001c.88917 Kingsley, I. C. (2023). Household poverty-wealth and decision-making autonomy as predictors of reproductive and maternal health services utilization among rural women in Nigeria. Ethiopian Journal of Health Sciences, 33(1), 163–172. https://doi.org/10.4314/ejhs.v33i1.20 Leventhal, S., Agyemang, S., & Koram, K. (2025). Inequality in utilization of maternal healthcare services in low- and middle-income countries: A scoping review of the literature. Maternal and Child Health Journal. https://doi.org/10.1007/s10995-025-04111-9 Macrotrends. (2024). Nigeria maternal mortality rate: Historical chart & data. https://www.macrotrends.net/global-metrics/countries/nga/nigeria/maternal-mortality-rate medRxiv. (2025). Maternal and child health trends in Nigeria: A scoping review of NDHS 2018 vs. NDHS 2023. https://doi.org/10.1101/2025.05.18.25327864 Merlo, J., Chaix, B., Ohlsson, H., Beckman, A., Johnell, K., Hjerpe, P., & Larsen, K. (2006). A brief conceptual tutorial of multilevel analysis in social epidemiology: Using measures of clustering in multilevel logistic regression to investigate contextual phenomena. Journal of Epidemiology & Community Health, 60(4), 290–297. National Population Commission [Nigeria] & ICF International. (2019). Nigeria Demographic and Health Survey 2018. NPC and ICF International. Nwosu, C. O., & Ataguba, J. E. (2019). Socioeconomic inequalities in maternal health service utilisation: A case of antenatal care in Nigeria using a decomposition approach. BMC Public Health, 19(1), 1493. https://doi.org/10.1186/s12889-019-7840-8 O'Donnell, O., Van Doorslaer, E., Wagstaff, A., & Lindelow, M. (2008). Analyzing health equity using household survey data: A guide to techniques and their implementation. World Bank Institute Development Studies. Oburota, C. S., Okungbowa, E. F. O., & Eke, F. A. (2023). Socioeconomic inequalities in maternal health care utilization and delivery channels in Nigeria. Journal of Population and Social Studies, 31. https://doi.org/10.25133/jpss.2023 Okafor, I. P., Sekoni, A. O., & Okafor, I. I. (2019). Levels and determinants of maternal mortality in northern and southern Nigeria. BMC Pregnancy and Childbirth, 19(1), 421. https://doi.org/10.1186/s12884-019-2471-8 Oladipo, I. A., & Akinwaare, M. O. (2023). Trends and patterns of maternal deaths from 2015 to 2019, associated factors and pregnancy outcomes in rural Lagos, Nigeria. The Pan African Medical Journal, 44, 185. https://doi.org/10.11604/pamj.2023.44.185.37567 Olawole, B. O., et al. (2023). To what extent is antenatal care in public health facilities associated with delivery in public health facilities? BMC Public Health, 23(1), 846. https://doi.org/10.1186/s12889-023-15688-7 Oluwaseun, O., et al. (2024). Regional trends, spatial patterns and determinants of health facility delivery among women of reproductive age in Nigeria. PLOS ONE. https://pmc.ncbi.nlm.nih.gov/articles/PMC11482673/ Piane, G., & Azubuike, P. C. (2023). Analyzing maternal mortality in Nigeria: A qualitative study approach using the three phases of delay. Journal of Health Promotion Behaviour, 8, 22– 33. Thaddeus, S., & Maine, D. (1994). Too far to walk: Maternal mortality in context. Social Science & Medicine, 38(8), 1091–1110. https://doi.org/10.1016/0277-9536(94)90226-7 Wagstaff, A., van Doorslaer, E., & Watanabe, N. (2003). On decomposing the causes of health sector inequalities with an application to malnutrition inequalities in Vietnam. Journal of Econometrics, 112(1), 207–223. World Health Organization . (2019). Trends in maternal mortality: 2000 to 2017. WHO Press. World Health Organization . (2023). Trends in maternal mortality: 2000 to 2020. WHO, UNICEF, UNFPA, World Bank Group, and United Nations Population Division. https://www.who.int/news/item/23-02-2023-a-woman-dies-every-two-minutes-due-to- pregnancy-or-childbirth