Comparison of Different Anthropometric Indicators in Evaluating Obesity Among Preschool Children
Objective To establish percentile reference values and reference curves for body fat percentage in preschool children in Wuhan.To analyze the correlation between different body measurement indicators and body composition,and to eval-uate their reliability in screening obesity in preschool children.Methods A total of 2710 preschoolers aged 3 to 5 years in Jiang-han and Hanyang District of Wuhan were selected and investigated by cluster random sampling method between 2021 and 2023.Their body height,weight,waist circumference(WC),and hip circumference were measured according to standard proce-dure.Body mass index(BMI),waist-to-hip ratio(WHR),and waist-to-height ratio(WHtR)were calculated.Body composition in-dexes,such as fat mass and fat-free mass,were measured by bioelectrical impedance analysis(BIA)using InBody 230 body com-position instrument.The Generalized Additive Model for Location,Scale and Shape(GAMLSS)was used to construct the percen-tile curve of PBF of preschool children in Wuhan.The BMI composition was analyzed by computing the fat mass index(FMI)and the fat-free body mass index(FFMI).The receiver operating characteristic(ROC)curve was used to evaluate the effectiveness of BMI,WC,WHtR,and WHR in obesity screening,using the established PBF P95 as the reference value for obesity.Results The PBF of preschool children gradually decreased with age,and the decline of boys was greater than that of girls.FMI contributed to main differences(56％-82％)in BMI in children of same age and gender with varying weight status and its contribution in-creased with increasing BMI.ROC curve analysis showed that the area under the curve(AUC)of BMI was close to 1.0(boys=0.942;girls=0.937),which was significantly larger than the AUC values of WC,WHtR,and WHR(P＜0.05).Conclusion The percentile reference value and growth curve of PBF of preschool children in Wuhan are constructed.BMI is the best evalua-tion index for obesity screening of preschool children.It can provide a reference for the growth and development evaluation as well as obesity screening among preschool children in this region.
obesitypreschool childrenbody mass indexwaist circumferencebody fat percentage
NETL
NSTL
万方数据
