Obesity measured as percent body fat, relationship with body mass index, and percentile curves for Mexican pediatric population

PloS One
Paula Costa-UrrutiaM Eunice Rodriguez-Arellano

Abstract

In Mexico, the increase in childhood obesity is alarming. Thus, improving the precision of its diagnosis is expected to impact on disease prevention. We estimated obesity prevalence by bioimpedance-based percent body fat (%BF) and body mass index (BMI) in 1061 girls and 1121 boys, from 3 to 17 years old. Multiple regressions and area under receiver operating curves (AUC) were used to determine the predictive value of BMI on %BF and percentile curves were constructed. Overall obesity prevalence estimated by %BF was 43.7%, and by BMI it was 20.1%; it means that the diagnosis by BMI underestimated around 50% of children diagnosed with obesity by %BF (≥30% for girls, ≥25% for boys). The fat mass excess is further underestimated in boys than in girls when using the standard BMI classification. The relationship between %BF and BMI was strong in school children and adolescents (all cases R2>0.70), but not in preschool children (girls R2 = 0.57, boys R2 = 0.23). AUCs showed greater discriminative power of BMI to detect %BF obesity in school children and adolescents (all cases AUC≥0.90) than in preschool children (girls AUC = 0.86; boys AUC = 0.70). Growth percentile charts showed that girls aged 9-17 years and boys aged 8-17 years pres...Continue Reading

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Citations

Mar 14, 2020·Children·Melchor AlpízarJesús Manuel De Aldecoa-Castillo
Jul 9, 2020·International Journal of Environmental Research and Public Health·Viktoryia KarchynskayaSijmen A Reijneveld
Aug 14, 2020·International Journal of Environmental Research and Public Health·Stanislava StranavskaJaroslava Kopcakova
Jul 30, 2019·International Journal of Endocrinology·Angélica Saraí Jiménez-OsorioMartha Eunice Rodríguez-Arellano
Aug 6, 2020·Antioxidants·Paula Costa-UrrutiaMartha Eunice Rodríguez-Arellano
Feb 19, 2021·JMIR MHealth and UHealth·Carmen BenavidesNatalia Arias
May 4, 2021·Endocrine Practice : Official Journal of the American College of Endocrinology and the American Association of Clinical Endocrinologists·Avivit BrenerYael Lebenthal

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