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Ponderal index classifies obesity in children and adolescents more accurately than body mass index z-scores

D Zaniqueli et al.
Used Parameters : PBF

Publication Year : 2019

Country : Brazil

Journal : Pediatric Research

Background We aimed to compare the accuracy of the ponderal index (PI) vs. BMI-for-age z-scores transformed (BMIz) in estimating body fat levels and classifying obesity in children and adolescents from a Brazilian urban population. Methods This is a cross-sectional study with 1149 participants (53.2% male), aged 6 to 18 years. Body fat percent (BFP) was obtained by multi-frequency bioelectrical impedance. Non-linear regression analysis provided the accuracy of both BMIz and PI in estimating BFP. False positive rate was …
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