Trends in the Prevalence of Overweight and Obesity among Chinese Preschool Children from 2006 to 2014

To examine the trends in the prevalence of overweight and obesity among preschool children from 2006 to 2014. A total of 145,078 children aged 3-6 years from 46 kindergartens finished the annual health examination in Tianjin, China. Height, weight and other information were obtained using standardiz...

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Bibliographic Details
Published in:PloS one 2015-08, Vol.10 (8), p.e0134466-e0134466
Main Authors: Xiao, Yanyu, Qiao, Yijuan, Pan, Lei, Liu, Jin, Zhang, Tao, Li, Nan, Liu, Enqing, Wang, Yue, Liu, Hongyan, Liu, Gongshu, Huang, Guowei, Hu, Gang
Format: Article
Language:English
Subjects:
Body mass
Body Mass Index
Body Weight
Child
Child, Preschool
Children
China - epidemiology
Epidemiology
Exercise
Female
Girls
Humans
Kindergarten
Male
Obesity
Obesity - epidemiology
Overweight
Overweight - epidemiology
Preschool children
Prevalence
Teenagers
Trends
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Summary:To examine the trends in the prevalence of overweight and obesity among preschool children from 2006 to 2014. A total of 145,078 children aged 3-6 years from 46 kindergartens finished the annual health examination in Tianjin, China. Height, weight and other information were obtained using standardized methods. Z-scores for weight, height, and BMI were calculated based on the standards for the World Health Organization (WHO) child growth standards. From 2006 to 2014, mean values of height z-scores significantly increased from 0.34 to 0.54, mean values of weight z-scores kept constant, and mean values of BMI z-scores significantly decreased from 0.40 to 0.23. Mean values of height z-scores, weight z-scores, and BMI z-scores slightly decreased among children from 3 to 4 years old, and then increased among children from 4 to 6 years old. Between 2006 and 2014, there were no significant changes in prevalence of overweight (BMI z-scores >2 SD) and obesity (BMI z-scores >3 SD) among 3-4 years children. However, prevalence of obesity (BMI z-scores >2 SD) increased from 8.8% in 2006 to 10.1% in 2010, and then kept stable until 2014 among 5-6 years children. Boys had higher prevalence of obesity than girls. Mean values of BMI z-scores decreased from 2006 to 2014 among Chinese children aged 3-6 years old due to the significant increase of height z-scores. Prevalence of obesity increased from 2006 to 2010, and then kept stable until 2014 among children aged 5-6 years. The prevalence of obesity was higher in boys than in girls.
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0134466