title: Prevalence and Trends of Obesity among Chinese Korean Nationality Children and Adolescents, 1991-2010.
abstract: BACKGROUND
  Obesity has become a serious problem for Chinese Han nationality. This research aimed to evaluate the prevalence of and trends in obesity among Chinese Korean nationality children and adolescents (1991-2010).
  
  
  METHODS
  We used data from Chinese National Surveys on Students' Constitution and Health (CNSSCH). CNSSCH was utilized to monitor Chinese students' health condition and released its data every 5 yr (1991, 1995, 2000, 2005 and 2010). The standard weight-for-height was the 80th percentile for sex- and age-specific growth charts based on the 1985 CNSSCH data. Obesity was defined as ≧120% of standard weight-for-height.
  
  
  RESULTS
  The total age-adjusted prevalence of obesity was 15.9% (95% confidence interval (CI), 14.9-16.9%) among Chinese Korean children and adolescents aged 7 to 18 yr. Children or adolescents who were boys (Rate ratios (RR), 1.35; 95% CI, 1.19-1.53) or aged 10-12 (RR, 1.38; 95% CI, 1.17-1.63) were more likely to be obese. The trend analysis of the 19-yr period implied a serious annual increasing trend during 1991-2000 (RR, 1.05; 95% CI, 1.02-1.07) and during 2000-2010 (RR,, 1.12; 95% CI, 1.11-1.13). Chinese Korean children may also be more likely to become obese than Han nationality children during 1991-2010.
  
  
  CONCLUSIONS
  A serious and continuous increasing trend was in the prevalence of obesity among Chinese Korean children and adolescents during 1991-2010. Childhood obesity had become a serious problem. This prognosis is worrisome.
authors.affiliation: Dept. of Child Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, School of Public Health, Soochow University, Suzhou, China.
authors.forename: Chunhua
authors.initials: C
authors.lastname: Zhao
authors.affiliation: Dept. of Child Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, School of Public Health, Soochow University, Suzhou, China.
authors.forename: Yana
authors.initials: Y
authors.lastname: Ma
authors.affiliation: Dept. of Child Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, School of Public Health, Soochow University, Suzhou, China.
authors.forename: Chenwei
authors.initials: C
authors.lastname: Pan
authors.affiliation: Dept. of Child Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, School of Public Health, Soochow University, Suzhou, China.
authors.forename: Xing
authors.initials: X
authors.lastname: Chen
authors.affiliation: Dept. of Child Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, School of Public Health, Soochow University, Suzhou, China.
authors.forename: Hongpeng
authors.initials: H
authors.lastname: Sun
keywords: Childhood obesity; Chinese Korean nationality; Prevalence; Trends