Cohort study on the effect of overweight in early childhood on obesity in adolescents in Zhongshan

ZHOU Shuang; HUANG Si-zhe; LI Qin; LI Feng-hua; CHEN Chao-jun; WANG Hai-jun

doi:10.11852/zgetbjzz2019-0370

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Chinese Journal of Child Health Care ›› 2020, Vol. 28 ›› Issue (2) : 123-127. DOI: 10.11852/zgetbjzz2019-0370

Cohort study on the effect of overweight in early childhood on obesity in adolescents in Zhongshan

ZHOU Shuang¹, HUANG Si-zhe², LI Qin¹, LI Feng-hua², CHEN Chao-jun², WANG Hai-jun¹

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Abstract

Objectives To investigate the incidence of obesity in children and adolescents aged 7 and 18 years in Zhongshan,and to explore the influence of overweight in early childhood on obesity in adolescents. Methods Data were from a retrospective cohort of 2 188 students from the first grade in primary school to the first grade in high school in Zhongshan.The weight and height of children in the first grade of primary school were measured in 2005 and were followed up annually for ten years.Overweight and obesity were defined using the standards of Screening for Overweight and Obesity among School-age Children and Adolescents (WS/T586-2018),the prevalence and incidence of obesity were calculated.χ²test and log-binomial model were used to analyze the impact of overweight in early childhood on obesity in adolescents. Results The detection rate of obesity in children of first grade was 4.89%,which reached to 6.99% in the fourth grade and 4.43% in the first grade at high school.The annual incidence of obesity decreased from 1.83% in the second grade in primary school to 0.74% in the first grade in high school.Overweight children in the first grade in primary school were 8.85 times as likely as normal-weight children to become obese in the first grade in high school (cumulative incidence for 9 years:41.33% vs.4.67%,RR=8.85,95%CI:6.12-12.78). Conclusion High incidence of obesity is more likely to occur in early childhood from the first grade in primary school to the first grade in high school.Overweight in early childhood obviously increased the risk of obesity in adolescents.Prevention of obesity should be implemented from the early life of children,especially in overweight children.

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obesity / incidence / children / adolescent / cohort

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ZHOU Shuang, HUANG Si-zhe, LI Qin, LI Feng-hua, CHEN Chao-jun, WANG Hai-jun. Cohort study on the effect of overweight in early childhood on obesity in adolescents in Zhongshan[J]. Chinese Journal of Child Health Care. 2020, 28(2): 123-127 https://doi.org/10.11852/zgetbjzz2019-0370

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