[Epidemiological characteristics of overweight and obesity in Chinese children and adolescents aged 6-17 years].

To analyze the prevalence rates of overweight and obesity in Chinese children and adolescents aged 6-17 years, and to provide scientific basis for the development of prevention strategies on obesity. Data was from children and adolescents aged 6-17 years in the China National Nutrition and Health Surveillance 2010-2012 program. In children aged 6 years, criteria of overweight and obesity were followed the WHO growth reference for school-aged children and adolescents. In children and adolescents aged 7-17 years, overweight and obesity were defined by sex and age specific BMI, recommended by Guidelines for prevention and control of overweight and obesity among school-age children and adolescents according to the Chinese guidelines. The overall rates on overweight and obesity were 9.6 and 6.4 among the Chinese children and adolescents aged 6-17 years, with 11.0 (12.8 for boys and 9.0 for girls) in urban and 7.7 (boys 9.7, girls 5.5) in rural areas. The rates of overweight and obesity among children and adolescents were 8.4 (boys 9.3, girls 7.4) and 5.2 (boys 6.2, girls 4.1) in the rural areas. According to the levels of household income, the overweight rates of children in high, middle and low incomes were 12.3, 10.7 and 8.2, with obesity as 8.6, 7.2 and 5.7 respectively. In 2012, the prevalence rates of overweight and obese were 9.6 and 6.4 among children and adolescents aged 6-17 years, respectively, higher in urban than in rural areas and higher boys than in girls. The prevalence rates of overweight and obesity seemed to be related to the levels of household income.