Reliability and accuracy of anthropometry performed by community health workers among infants under 6months in rural Kenya

Objective To assess the inter-observer variability and accuracy of Mid Upper Arm Circumference (MUAC) and weight-for-length Z score (WFLz) among infants aged <6months performed by community health workers (CHWs) in Kilifi District, Kenya. Methods A cross-sectional repeatability study estimate...

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Main Authors: Mwangome, M, Fegan, G, Mbunya, R, Prentice, A, Berkley, J
Format: Journal article
Language:English
Published: 2012
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author Mwangome, M
Fegan, G
Mbunya, R
Prentice, A
Berkley, J
author_facet Mwangome, M
Fegan, G
Mbunya, R
Prentice, A
Berkley, J
author_sort Mwangome, M
collection OXFORD
description Objective To assess the inter-observer variability and accuracy of Mid Upper Arm Circumference (MUAC) and weight-for-length Z score (WFLz) among infants aged <6months performed by community health workers (CHWs) in Kilifi District, Kenya. Methods A cross-sectional repeatability study estimated inter-observer variation and accuracy of measurements initially undertaken by an expert anthropometrist, nurses and public health technicians. Then, after training, 18 CHWs (three at each of six sites) repeatedly measured MUAC, weight and length of infants aged <6months. Intra-class correlations (ICCs) and the Pitman's statistic were calculated. Results Among CHWs, ICCs pooled across the six sites (924 infants) were 0.96 (95% CI 0.95-0.96) for MUAC and 0.71 (95% CI 0.68-0.74) for WFLz. MUAC measures by CHWs differed little from their trainers: the mean difference in MUAC was 0.65mm (95% CI 0.023-1.07), with no significant difference in variance (P=0.075). Conclusion Mid Upper Arm Circumference is more reliably measured by CHWs than WFLz among infants aged <6months. Further work is needed to define cut-off values based on MUAC's ability to predict mortality among younger infants. © 2012 Blackwell Publishing Ltd.
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spelling oxford-uuid:8615519e-65a8-4879-9bf6-28963cb1018e2022-03-26T22:01:45ZReliability and accuracy of anthropometry performed by community health workers among infants under 6months in rural KenyaJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:8615519e-65a8-4879-9bf6-28963cb1018eEnglishSymplectic Elements at Oxford2012Mwangome, MFegan, GMbunya, RPrentice, ABerkley, JObjective To assess the inter-observer variability and accuracy of Mid Upper Arm Circumference (MUAC) and weight-for-length Z score (WFLz) among infants aged <6months performed by community health workers (CHWs) in Kilifi District, Kenya. Methods A cross-sectional repeatability study estimated inter-observer variation and accuracy of measurements initially undertaken by an expert anthropometrist, nurses and public health technicians. Then, after training, 18 CHWs (three at each of six sites) repeatedly measured MUAC, weight and length of infants aged <6months. Intra-class correlations (ICCs) and the Pitman's statistic were calculated. Results Among CHWs, ICCs pooled across the six sites (924 infants) were 0.96 (95% CI 0.95-0.96) for MUAC and 0.71 (95% CI 0.68-0.74) for WFLz. MUAC measures by CHWs differed little from their trainers: the mean difference in MUAC was 0.65mm (95% CI 0.023-1.07), with no significant difference in variance (P=0.075). Conclusion Mid Upper Arm Circumference is more reliably measured by CHWs than WFLz among infants aged <6months. Further work is needed to define cut-off values based on MUAC's ability to predict mortality among younger infants. © 2012 Blackwell Publishing Ltd.
spellingShingle Mwangome, M
Fegan, G
Mbunya, R
Prentice, A
Berkley, J
Reliability and accuracy of anthropometry performed by community health workers among infants under 6months in rural Kenya
title Reliability and accuracy of anthropometry performed by community health workers among infants under 6months in rural Kenya
title_full Reliability and accuracy of anthropometry performed by community health workers among infants under 6months in rural Kenya
title_fullStr Reliability and accuracy of anthropometry performed by community health workers among infants under 6months in rural Kenya
title_full_unstemmed Reliability and accuracy of anthropometry performed by community health workers among infants under 6months in rural Kenya
title_short Reliability and accuracy of anthropometry performed by community health workers among infants under 6months in rural Kenya
title_sort reliability and accuracy of anthropometry performed by community health workers among infants under 6months in rural kenya
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