Spatial disparities of antenatal care utilization among pregnant women in sub-Saharan Africa—Bayesian geo-additive modelling approach

BackgroundAntenatal care (ANC) is critical for ensuring healthy pregnancies and positive birth outcomes. Despite its importance, significant disparities in ANC access and utilization exist across sub-Saharan Africa (SSA), influenced by various socioeconomic, geographical, and systemic factors. This...

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Main Authors: Denekew Bitew Belay, Haile Mekonnen Fenta, Nigussie Adam Birhan, Najmeh Nakhaei Rad, Ding-Geng Chen
Format: Article
Language:English
Published: Frontiers Media S.A. 2025-06-01
Series:Frontiers in Public Health
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Online Access:https://www.frontiersin.org/articles/10.3389/fpubh.2025.1517724/full
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author Denekew Bitew Belay
Denekew Bitew Belay
Haile Mekonnen Fenta
Haile Mekonnen Fenta
Haile Mekonnen Fenta
Nigussie Adam Birhan
Najmeh Nakhaei Rad
Ding-Geng Chen
Ding-Geng Chen
author_facet Denekew Bitew Belay
Denekew Bitew Belay
Haile Mekonnen Fenta
Haile Mekonnen Fenta
Haile Mekonnen Fenta
Nigussie Adam Birhan
Najmeh Nakhaei Rad
Ding-Geng Chen
Ding-Geng Chen
author_sort Denekew Bitew Belay
collection DOAJ
description BackgroundAntenatal care (ANC) is critical for ensuring healthy pregnancies and positive birth outcomes. Despite its importance, significant disparities in ANC access and utilization exist across sub-Saharan Africa (SSA), influenced by various socioeconomic, geographical, and systemic factors. This study aimed to analyze the spatial disparities in the proportion of recommended ANC utilization and its associated risk factors among pregnant women in 34 sub-Saharan African countries.MethodThis study utilized the most recent Demographic and Health Survey (DHS) data from 34 countries across the SSA region. To assess the spatial disparities and their associated risk factors of ANC utilization, a geo-additive model via the Integrated Nested Laplace Approximation (INLA) was adopted.ResultThe overall prevalence of recommended ANC utilization in SSA was 22.15%, with a significant difference between countries, ranging from 0.27% in Rwanda to 76.28% in Zimbabwe. Both Moran’s I and Geary’s C tests, with different neighborhood structures, evidenced the existence of spatial autocorrelation of ANC utilization among women in SSA countries. A Bayesian geo-additive model with Besag-York-Mollié (BYM) mixed effect was found to be the best model to assess the spatial dependencies and the non-linear effects of the factors on ANC utilization among women of reproductive age. The study showed that the existence of spatial disparities in ANC utilization and media exposure, as well as the mother’s work status, partner’s working status, age of mother, age at first cohabitation, and place of delivery, has a significant effect on ANC utilization.ConclusionThe overall coverage of recommended ANC in SSA countries falls short of the global minimum recommended ANC utilization. The lower coverage and inequality of ANC utilizations are influenced by underutilization of healthcare services, economic status, women’s education coverage, poor/absence of transportation facilities, and media exposure related to healthy reproduction. Empowering women through different media outlets, strengthening their economic power, easy access to health facilities, and decision-making power increases maternal healthcare service utilization.
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spelling doaj-art-1603864d5f284eb7bb445de32a43c54c2025-08-20T03:26:51ZengFrontiers Media S.A.Frontiers in Public Health2296-25652025-06-011310.3389/fpubh.2025.15177241517724Spatial disparities of antenatal care utilization among pregnant women in sub-Saharan Africa—Bayesian geo-additive modelling approachDenekew Bitew Belay0Denekew Bitew Belay1Haile Mekonnen Fenta2Haile Mekonnen Fenta3Haile Mekonnen Fenta4Nigussie Adam Birhan5Najmeh Nakhaei Rad6Ding-Geng Chen7Ding-Geng Chen8Department of Statistics, Bahir Dar University, Bahir Dar, EthiopiaDepartment of Statistics, University of Pretoria, Pretoria, South AfricaDepartment of Statistics, Bahir Dar University, Bahir Dar, EthiopiaCenter for Environmental and Respiratory Health Research, Population Health, University of Oulu, Oulu, FinlandBiocenter Oulu, University of Oulu, Oulu, FinlandDepartment of Statistics, College of Natural and Computational Science, Injibara University, Injibara, EthiopiaDepartment of Statistics, University of Pretoria, Pretoria, South AfricaDepartment of Statistics, University of Pretoria, Pretoria, South AfricaCollege of Health Solution, Arizona State University, Phoenix, AZ, United StatesBackgroundAntenatal care (ANC) is critical for ensuring healthy pregnancies and positive birth outcomes. Despite its importance, significant disparities in ANC access and utilization exist across sub-Saharan Africa (SSA), influenced by various socioeconomic, geographical, and systemic factors. This study aimed to analyze the spatial disparities in the proportion of recommended ANC utilization and its associated risk factors among pregnant women in 34 sub-Saharan African countries.MethodThis study utilized the most recent Demographic and Health Survey (DHS) data from 34 countries across the SSA region. To assess the spatial disparities and their associated risk factors of ANC utilization, a geo-additive model via the Integrated Nested Laplace Approximation (INLA) was adopted.ResultThe overall prevalence of recommended ANC utilization in SSA was 22.15%, with a significant difference between countries, ranging from 0.27% in Rwanda to 76.28% in Zimbabwe. Both Moran’s I and Geary’s C tests, with different neighborhood structures, evidenced the existence of spatial autocorrelation of ANC utilization among women in SSA countries. A Bayesian geo-additive model with Besag-York-Mollié (BYM) mixed effect was found to be the best model to assess the spatial dependencies and the non-linear effects of the factors on ANC utilization among women of reproductive age. The study showed that the existence of spatial disparities in ANC utilization and media exposure, as well as the mother’s work status, partner’s working status, age of mother, age at first cohabitation, and place of delivery, has a significant effect on ANC utilization.ConclusionThe overall coverage of recommended ANC in SSA countries falls short of the global minimum recommended ANC utilization. The lower coverage and inequality of ANC utilizations are influenced by underutilization of healthcare services, economic status, women’s education coverage, poor/absence of transportation facilities, and media exposure related to healthy reproduction. Empowering women through different media outlets, strengthening their economic power, easy access to health facilities, and decision-making power increases maternal healthcare service utilization.https://www.frontiersin.org/articles/10.3389/fpubh.2025.1517724/fullantenatal care contactsgeo-additivespatial disparitiesINLAsub-Saharan Africa
spellingShingle Denekew Bitew Belay
Denekew Bitew Belay
Haile Mekonnen Fenta
Haile Mekonnen Fenta
Haile Mekonnen Fenta
Nigussie Adam Birhan
Najmeh Nakhaei Rad
Ding-Geng Chen
Ding-Geng Chen
Spatial disparities of antenatal care utilization among pregnant women in sub-Saharan Africa—Bayesian geo-additive modelling approach
Frontiers in Public Health
antenatal care contacts
geo-additive
spatial disparities
INLA
sub-Saharan Africa
title Spatial disparities of antenatal care utilization among pregnant women in sub-Saharan Africa—Bayesian geo-additive modelling approach
title_full Spatial disparities of antenatal care utilization among pregnant women in sub-Saharan Africa—Bayesian geo-additive modelling approach
title_fullStr Spatial disparities of antenatal care utilization among pregnant women in sub-Saharan Africa—Bayesian geo-additive modelling approach
title_full_unstemmed Spatial disparities of antenatal care utilization among pregnant women in sub-Saharan Africa—Bayesian geo-additive modelling approach
title_short Spatial disparities of antenatal care utilization among pregnant women in sub-Saharan Africa—Bayesian geo-additive modelling approach
title_sort spatial disparities of antenatal care utilization among pregnant women in sub saharan africa bayesian geo additive modelling approach
topic antenatal care contacts
geo-additive
spatial disparities
INLA
sub-Saharan Africa
url https://www.frontiersin.org/articles/10.3389/fpubh.2025.1517724/full
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