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Understanding the Geographical Distribution of Stunting in Tanzania : A Geospatial Analysis of the 2015-16 Demographic and Health Survey

Author

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  • Joseph,George
  • Gething,Peter William
  • Bhatt,Samir
  • Ayling,Sophie Charlotte Emi
Abstract
Tanzania is home to the third highest population of stunted children in Sub-Saharan Africa, with about 2.7 million children under the age of five failing to reach their full potential of growth attainment compared with the reference population as per the World Health Organization standards. Several studies have shown that stunted growth during childhood entraps the future of children in a vicious circle of recurrent diseases, reduced human development, and lower earnings, thus increasing their likelihood of being poor when they grow up. To reduce stunting, the Government of Tanzania and development partners are introducing a convergence of multisectoral interventions adapted to local needs. However, the existing stunting data are representative only at higher administrative levels, thus making it difficult to implement these efforts. The paper uses the 2016 geo-referenced Demographic and Health Survey in conjunction with relevant spatially gridded covariate data, such as nighttime lights, water and sanitation access, vegetation index, travel time, and so on. Geospatial techniques, such as model-based statistics and Bayesian inference implemented using the INLA algorithm, along with appropriate model validation exercises are employed to develop high-resolution maps of stunting in Tanzania at 1×1-kilometer spatial resolution. The maps show that areas of consistently high stunting rates tend to be more common in rural parts of the country, especially throughout the western and southwestern border areas. There is high prevalence of low stunting in the urban areas around Dar es Salaam, Arusha, and Dodoma, as well as in the south of Lake Victoria.

Suggested Citation

  • Joseph,George & Gething,Peter William & Bhatt,Samir & Ayling,Sophie Charlotte Emi, 2019. "Understanding the Geographical Distribution of Stunting in Tanzania : A Geospatial Analysis of the 2015-16 Demographic and Health Survey," Policy Research Working Paper Series 8688, The World Bank.
    • Handle: RePEc:wbk:wbrwps:8688
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    Keywords

    Reproductive Health; Early Child and Children's Health; Health Care Services Industry; Hydrology; Inequality; Nutrition;
    All these keywords.

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