Objective To investigate the characteristics and influencing factors of waist circumference among preschool children in urban area of Yangzhou,so as to provide reference for the screening and prevention of abdominal overweight and obesity. Methods Totally 2 531 children were selected from 7 kindergartens from April to May in 2015 by stratified cluster sampling.And their parents were asked to finish a questionnaire investigation.The weight,height,waist circumference of children were measured by centralized physical examination,and were descriptively analyzed.The influencing factors of waist circumference were analyzed by univariate and multivariate Logistic regression analysis. Results Waist circumference increased gradually with age among preschool children in urban area of Yangzhou,and it was larger in boys than that in girls in each age group.Waist to height ratio in girls decreased gradually with age,while waist to height ratio in boys showed fluctuations.Univariate analysis showed that parental body mass index (BMI),maternal education,daily sleep time,outdoor activity time and screen time had influence on waist circumference of children (P<0.05).Multivariate Logistic regression analysis showed that high BMI of parents is a risk factor for high abdominal circumference in preschool children (mother BMI:OR=1.15,95%CI:1.09-1.18;father BMI:OR=1.12,95%CI:1.07-1.15). Conclusions It is supposed to establish the boundary value of normal waist circumference and waistline for abdominal overweight and obesity for preschool children in China,thereby promoting better screening and prevention of abdominal overweight/obesity.Besides,comprehensive intervention of family-centered diet and lifestyle is warranted in order to control abdominal obesity
Key words
preschool children /
waist circumference /
waist to height ratio /
abdominal obesity
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