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Examining Spatial Heterogeneity and Potential Risk Factors of Childhood Undernutrition in High-Focus Empowered Action Group (EAG) States of India

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Abstract

This study comprehensively analyses and maps the spatial variability and spatial spread (inequality) in nutritional outcomes among young children residing in the 277 high-focus districts in the EAG region. We used data from the fourth update of National Family Health Survey (NFHS-4), from 2015 to 2016, and adopted a Bayesian distributional structured additive regression (STAR) approach to quantify the variations in the mean level and dispersion in the undernutrition indicators across space and based on other demographic and socioeconomic indicators available to the child, mother, and household. Markov random field and Bayesian P-splines were used as prior distributions for the spatial and nonlinear effects, respectively. Substantial intra-district heterogeneity in childhood nutritional deficiency found in EAG region; the districts where dispersions are huge, are predominantly located in three states: Uttar Pradesh, Madhya Pradesh, and Bihar. Our findings provide evidence of strong spatial structure that suggests neighbouring districts from different states have similar pattern of distribution in terms of undernourished children. The effects of child's age, mother’s age and her BMI were found to be non-linear. Furthermore, we find significant linear effects of several categorical covariates, such as, gender, birth order, birth size, maternal schooling, household wealth and sanitary condition, on indicators of undernutrition in young children. Findings strongly recommend that nutrition improvement programmes in the EAG states need to account for internal spatial heterogeneity evident across the districts of this region. Efforts are needed in assessing the district-specific causes of nutritional deficiency among the young children.

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Code Availability

Software codes used for statistical modelling are available upon request.

Abbreviations

EAG:

Empowered Action Group

NFHS:

National Family Health Survey

STAR:

Structured additive regression

MCMC:

Markov chain Monte Carlo

IWLS:

Iteratively weighted least square

DIC:

Deviance information criterion

BMI:

Body mass index

95% CI:

95% Credible interval

SCs:

Scheduled castes

STs:

Scheduled tribes

OBC:

Other backward classes

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Funding

This research received no specific grant from any funding agency in the public, commercial or not-for-profit sectors.

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Authors and Affiliations

Authors

Contributions

PB and EG conceived and designed the study. PB and EG involved to statistical analysis and data interpretation. PB wrote the first draft of the manuscript. EG critically revised the manuscript. Both the authors read and approved the final manuscript.

Corresponding author

Correspondence to Pravat Bhandari.

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Conflict of interest

The authors declare that they have no competing interest.

Ethical Approval

This study analysed the data available in the public domain upon request from The DHS Program available at https://dhsprogram.com hence, no ethical issues regarding data collection are involved with this research work.

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Appendix

Appendix

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Table 4 Description of variables considered in the present analysis

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Table 5 Comparison of fitted models based on the DIC statistic

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Bhandari, P., Gayawan, E. Examining Spatial Heterogeneity and Potential Risk Factors of Childhood Undernutrition in High-Focus Empowered Action Group (EAG) States of India. Spat Demogr 10, 447–486 (2022). https://doi.org/10.1007/s40980-022-00108-y

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  • DOI: https://doi.org/10.1007/s40980-022-00108-y

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