Research on body mass index of children aged 2～18 years in Chengdu

Objective:To investigate the rate of obesity and the trend of body mass index(BMI) among pre-school children in Chengdu.Methods:10 530 children aged 2～18 years were tested and the BMI evaluation was performed in those data according to recommendation by Chinese working group on obesity for children(WGOC),the international obesity task force reference(IOTF) and the US 2000 CDC growth chart.Results:The prevalence of overweight and obesity were 9.6% and 5.2%(male),7.1% and 2.3%(female) based on WGOC criteria;9.5% and 2.8%(male),7.1% and 1.1%(female) based on IOTF criteria;8.0% and 5.7%(male),6.0% and 2.1%(female) based on CDC2000 criteria.The rate of obesity in boys was higher than that in girls.The trend of BMI descended slowly at first and went up back then.The obesity-overweight ratio was higher in girls than that in boys.Conclusion:The prevalence of children obesity in Chengdu is on early phase,but the potential risk to obesity is very high.Preventing obesity requires consistent efforts.