What factors may contribute to sex differences in childhood obesity prevalence in China?

Vivian Hc Wang, Jungwon Min, Hong Xue, Shufa Du, Fei Xu, Huijun Wang, Youfa Wang

Research output: Contribution to journalArticlepeer-review

Abstract

Objective Previous studies in China showed large sex differences in childhood overweight and obesity (OW/OB) rates. However, limited research has examined the cause of these sex differences. The present study aimed to examine individual and parental/familial factors associated with sex differences in childhood OW/OB rates in China.Design Variables associated with child weight status, beliefs and behaviours, and obesity-related parenting practices were selected to examine their sex differences and association with a sex difference in child OW/OB outcomes using logistic regression analysis.Setting Cross-sectional data analysis using the 2011 China Health and Nutrition Survey.Subjects Children aged 6-17 years (n 1544) and their parents.Results Overall child OW/OB prevalence was 16·8 %. Adolescent boys (AB; 12-17 years) were about twice as likely to be overweight/obese as adolescent girls (AG; 15·5 v. 8·4 %, P<0·05). AB more likely had energy intake exceeding recommendations, self-perceived underweight, underestimated their body weight and were satisfied with their physical activity level than AG. AG more likely practised weight-loss management through diet and self-perceived overweight than AB. Mothers more likely identified AG's weight accurately but underestimated AB's weight. Stronger associations with risk of childhood OW/OB were found in boys than girls in dieting to lose weight (OR=6·7 in boys v. 2·6 in girls) and combined maternal and child perception of the child's overweight (OR=35·4 in boys v. 14·2 in girls).Conclusions Large sex differences in childhood obesity may be related to the sex disparities in weight-related beliefs and behaviours among children and their parents in China.

Original languageEnglish (US)
Pages (from-to)2056-2064
Number of pages9
JournalCambridge Quarterly of Healthcare Ethics
Volume21
Issue number11
DOIs
StatePublished - Aug 1 2018

Keywords

  • Children
  • China
  • Obesity
  • Parenting
  • Sex

ASJC Scopus subject areas

  • Issues, ethics and legal aspects
  • Health(social science)
  • Health Policy

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