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Updated: May 10, 2026

Assessment of Child Anthropometry in a Large Epidemiologic Study
Published on: February 2, 2017
Diagnosing childhood undernutrition and accuracy of plotting growth charts in Kenya
Antonina N Mutoro1, Charlotte M Wright
1PEACH Unit, School of Medicine, MVLS College, University of Glasgow, Glasgow G3 8SJ, UK.
Insights
Healthcare workers in Kenya showed poor accuracy in plotting child growth data on the Road to Health chart. This impacts the accurate diagnosis of childhood undernutrition and highlights a need for improved training and chart design.
Area of Science:
- Pediatrics
- Public Health
- Nutrition Science
Background:
- Childhood undernutrition remains a significant global health challenge.
- Accurate growth monitoring is crucial for early detection and intervention.
- The Road to Health (RTH) chart is a key tool for tracking child growth in Kenya.
Purpose of the Study:
- To assess healthcare worker (HCW) accuracy in diagnosing childhood undernutrition using the Kenyan RTH chart.
- To evaluate the precision of HCW in plotting child weight and age data on the RTH chart.
- To identify potential areas for improvement in RTH chart utilization and design.
Main Methods:
- A survey was conducted with 39 healthcare workers actively involved in growth monitoring in Kenya.
- Participants completed questionnaires involving plotting child weights at 2, 6, and 9 months on the RTH chart.
- Accuracy was assessed by comparing plotted values to true values for weight and age.
Main Results:
- The primary method for identifying undernutrition was weight-for-age at a single visit.
- Significant plotting inaccuracies were observed: 69% of HCW plotted weights with >±0.5 kg error at 9 months.
- Age plotting errors exceeded ±2 weeks for 15% of HCW at 2 months and 23% at 9 months.
Conclusions:
- HCW in this pilot study demonstrated poor plotting accuracy on the RTH chart.
- There is underutilization of serial measurements for diagnosing undernutrition.
- Improvements are needed in RTH chart design and HCW education on its correct use.
Abstract:
This study surveyed how healthcare workers (HCW) in Kenya diagnose childhood undernutrition and growth chart plotting accuracy. HCW (39) actively involved in growth monitoring completed questionnaires that included plotting of weights at ages 2, 6 and 9 months using the Kenyan road to health chart (RTH). The most commonly used measure for identifying undernutrition was weight for age collected at a single visit. Weights tended to be plotted higher than the true value, with 27 (69%) respondents plotting more than ±0.5 kg from the true value at 9 months. At 2 months 15% plotted age more than ±2 weeks from the true value, 23% at 9 months. Health workers in this local pilot study showed very poor plotting accuracy and low use of serial measurements to identify undernutrition. There is a need to improve the design of the RTH chart as well as education on chart use.
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