The burden and correlates of childhood undernutrition in Tanzania according to composite index of anthropometric failure
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Date
2020
Journal Title
Journal ISSN
Volume Title
Publisher
BMC Nutrition
Abstract
Background: Undernutrition is a public health problem worldwide. Tanzania has made significant achievements in
the reduction of childhood undernutrition over the past two decades. However, the exact burden of undernutrition
was under-estimated when using conventional indices of stunting, wasting and underweight. The objective of this
study was to determine the overall prevalence of undernutrition, describe the trends and examine the correlates
associated with undernutrition among children under-five years using the composite index of anthropometric
failure (CIAF). This study aims to understand the real burden and drivers of undernutrition to improve design,
implementation and monitoring of appropriate interventions to ameliorate all form of childhood undernutrition in
the country.
Methods: About 37,205 mother-child pairs were retrieved and analyzed from the Tanzania Demographic and
Health Surveys (TDHS) conducted in various years from 1991, 1996, 1999, 2004–05, 2009–10, to 2015–16. The
anthropometric data of children under-five years were used to determine the overall burden and trends of
undernutrition using CIAF. The recent TDHS surveys from 2005 to 2015 were used to examine the correlates of
CIAF. To determine the correlates, multivariate analysis was conducted to estimate the prevalence ratios (PR) with
95% confidence intervals (CI) using Poisson regression with robust variance.
Results: The prevalence of CIAF declined significantly from 50% in 1991 to 38.2% in 2015 (p < 0.001). The correlates
of CIAF vary across surveys. The multivariate analysis of recent 2015 survey revealed that the prevalence of CIAF was
significantly higher for older children (p < 0.001), children living in rural areas (p = 0.028), and those born with non-
educated (p = 0.009) or single mothers (p = 0.008). The prevalence of CIAF was significantly lower for girls (p <
0.001), being born with overweight/obese mothers (p < 0.001), living with older head of the household (p < 0.001)
or living in richest household (p < 0.001). Moreover, children who were born with low birth weight (p < 0.001), or
having fever (p = 0.044) were most likely to have anthropometric failure. However, consumption of diversified diet
was not found to be associated with anthropometric failure (p > 0.05). Conclusion: About one in every three under-five years children are suffering from either one or multiple forms of
anthropometric failure in Tanzania. There is a significant decline trends in overall burden of undernutrition in
Tanzania from the past 25 years, as measured by CIAF. Multiple factors including those related to mothers, children
and household socio-economic characteristics have the potential to influence childhood undernutrition. Efforts to
reduce the burden of undernutrition should mainly focus on reducing poverty and raising people’s living standards.
Description
Journal Article
Keywords
Children, Stunting, Wasting, Underweight, Anthropometric failure, CIAF, Tanzania