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  • Title: Comparison of midupper arm circumference and weight-for-height z score for assessing acute malnutrition in Bangladeshi children aged 6-60 mo: an analytical study.
    Author: Hossain MI, Ahmed T, Arifeen SE, Billah SM, Faruque A, Islam MM, Jackson AA.
    Journal: Am J Clin Nutr; 2017 Nov; 106(5):1232-1237. PubMed ID: 28978541.
    Abstract:
    Background: In clinical settings, wasting in childhood has primarily been assessed with the use of a weight-for-height z score (WHZ), and in community settings, it has been assessed via the midupper arm circumference (MUAC) with a cutoff <115 mm for severe wasting and <115-125 mm for moderate wasting. Our recent experience indicates that many wasted children were not identified when these cutoffs for MUAC were used.Objective: We determined the cutoffs for MUAC to detect wasting in Bangladeshi children aged 6-60 mo.Design: A secondary analysis was carried out on data from 27,767 children aged 6-59 mo. This analysis comprised 1) 9131 children across Bangladesh and 2) 18,636 children enrolled in a surveillance study in the Dhaka Hospital of icddr,b during 1996-2014. The area under the receiver operating curve was used to indicate the most appropriate choice for cutoffs that related MUAC with WHZ.Results: The mean ± SD age for the entire group was 21 ± 14 mo, WHZ was -1.18 ± 1.23, height-for-age z score was -1.63 ± 1.39, MUAC was 136 ± 14 mm, and 45% of subjects were girls. MUAC correlated with the WHZ (r: 0.618, P < 0.001). Age-stratified analyses revealed that, for ages 6-24 mo, MUAC cutoffs were <120 mm for a WHZ <-3 and <125 mm for a WHZ <-2 with a sensitivity of 72.9% and 63.2%, respectively, and a specificity of 84.7% and 85.3%, respectively; for ages 25-36 mo, MUAC cutoffs were <125 mm for a WHZ <-3 and <135 mm for a WHZ <-2 with a sensitivity of 55.0% and 71.7%, respectively, and a specificity of 92.8% and 78.7% respectively; and for ages 37-60 mo, MUAC cutoffs were <135 mm for a WHZ <-3 and <140 mm for a WHZ <-2 with a sensitivity of 71.4% and 70.4%, respectively, and a specificity of 84.6% and 80.3%, respectively.Conclusion: The respective cutoffs for MUAC to better capture the vulnerability and risk of severe (WHZ <-3) and moderate (WHZ <-2) wasting would be <120 and <125 mm for ages 6-24 mo, <125 and <135 mm for ages 25-36 mo, and <135 and <140 mm for ages 37-60 mo.
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