A Study on growth references of height,weight and body mass index for Children aged 0-7 years in Urban Xuzhou

Objective:To study some percentage standards by comparing with the standards generally used in the world.The percentage standards included growth references of height for age(HFA),weight for age(WFA),body mass index(BMI) for Children aged 0-7 years in urban Xuzhou.And to develop the critical references of BMI for over-weight and fatness.Methods:①To compare other standards,randomized stratified clustered sampling method was used.The data of height and weight of 11 747 children(6 261 boys,5 486 girls),which measured in 2002~2004 in urban Xuzhou,were collected.②To construct the HFA,WFA and BMI percentage curve of the children aged 0~7 years in urban Xuzhou by using LMS method.Results:①By using LMS software,nine percentage curves of the children aged 0~7 years were plotted for HFA,WFA and BlVll respectively.They were percentage P3、P5、P10、P25、P50,P75,P90,P95 and P97 of the I-IFA,WFA and BMI.②The height of the children in urban Xuzhou grew with the age of them.But the curves became less sharply after age of 6 years for boys and 5 years for girls.The heights of boys and girls before the age of 7 years in Xuzhou were all higher than the standards of WHO.③The weight of the children in urban Xuzhou also kept increasing with the age of them.But the curves become less sharply after age of 6 years for both boys and girls.The weights of boys and girls before the age of 7 years in Xuzhou were all higher than those of WHO.④Based on the recommended BMI value of International Obesity Task Force on overweight and obesity cutoff points for children at age 7,the corresponding percentiles of these BMI value for Xuzhou boys were P72.6 and P92.6,and for Xuzhou girls were P82.1 and P96.5.The prevalence of overweight was 27.4% and 17.9% for Xuzhou boys and girls respectively at age 7.The prevalence of obesity was 7.4% and 3.5% for Xuzhou boys and girls respectively at age 7.Conclusion:The percentage references of the height,weight and BMI of the children aged 0~7 years in urban Xuzhou have been developed by using the LMS software.