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Population attributable fraction of risk factors for anemia among children aged 6-59 months: A multilevel complex
Meklit Melaku Bezie1, Beminate Lemma Seifu2, Hiwot Altaye Asebe2
1Department of Public Health Officer, Institute of Public Health, College of Medicine and Health Sciences, University of Gondar, Gondar, Ethiopia.
Insights
Childhood anemia in sub-Saharan Africa is highly prevalent. Key modifiable factors include maternal anemia, low maternal education, poverty, and poor sanitation, offering targets for public health interventions.
Area of Science:
- Public Health
- Pediatrics
- Global Health
Background:
- Childhood anemia remains a critical public health issue in sub-Saharan Africa (SSA).
- Limited research has quantified the impact of modifiable risk factors on anemia prevalence in SSA children.
- This study quantifies the population-attributable fraction (PAF) of anemia risk factors in children aged 6-59 months across 27 SSA countries.
Purpose of the Study:
- To assess the population-attributable fraction (PAF) of various risk factors contributing to anemia in children under five in sub-Saharan Africa.
- To identify key modifiable risk factors for targeted public health interventions.
Main Methods:
- Secondary data analysis of Demographic and Health Survey (DHS) data from 27 SSA countries, involving 124,285 children.
- Utilized a multilevel modified Poisson regression model to estimate adjusted Prevalence Odds Ratios (aPOR).
- Calculated the Population Attributable Fraction (PAF) with 95% Confidence Intervals (CI) for identified risk factors.
Main Results:
- The overall anemia prevalence in SSA children was 61.99%.
- Significant risk factors contributing to anemia included maternal anemia (7.37% PAF), low maternal education (5.86% PAF), and poverty (3.52% PAF).
- Childhood undernutrition, diarrheal and febrile illnesses, and poor sanitation also significantly contributed to anemia prevalence.
Conclusions:
- Maternal anemia, low maternal education, poverty, poor sanitation, and childhood illnesses are major contributors to anemia in SSA.
- Interventions focusing on maternal and child health, education, nutrition, and sanitation are crucial for reducing childhood anemia.
- Addressing these modifiable risk factors can significantly impact public health outcomes in the region.
Background:
Anemia among children under five remains a significant public health concern in sub-Saharan Africa (SSA). While numerous studies have examined its associated factors, limited evidence exists on the public health impact of modifiable risk factors. This study assessed the population-attributable fraction (PAF) of risk factors for anemia among children aged 6-59 months across 27 SSA countries.
Methods:
A secondary data analysis was conducted using Demographic and Health Survey (DHS) data from 27 SSA countries, including a weighted sample of 124,285 children. Data management and analysis were done using STATA-14 software. The presence of clustering was assessed using the Intra-cluster Correlation Coefficient (ICC), Median Odds Ratio (MOR), and Likelihood Ratio Test (LRT). A multilevel modified Poisson regression model was employed to estimate adjusted Prevalence Odds Ratios (aPOR) and the corresponding PAF with 95% Confidence Intervals (CI), and the Population Attributable Fraction (PAF) with the 95% CI was estimated using the aPOR and the prevalence of exposure.
Results:
The overall prevalence of anemia among children in SSA was 61.99% (95% CI: 61.73, 62.27). Significant risk factors included maternal anemia (PAF = 7.37%), low maternal education (PAF = 5.86% for no formal education), poor household wealth status (PAF = 3.52% for the poorest), lack of media exposure (PAF = 0.76%), child undernutrition (stunting PAF = 1.31%, underweight PAF = 0.84%), diarrheal (PAF = 1.19%) and febrile illness (PAF = 2.26%), and unimproved toilet facilities (PAF = 1.02%).
Conclusion:
Maternal anemia, low maternal educational status, poverty, poor sanitation, inadequate media access, unimproved toilet facilities, and childhood illness significantly contribute to anemia in SSA. Targeted interventions to improve maternal and child health, enhance education, and ensure better nutrition and sanitation could help reduce childhood anemia in the region.
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