Epidemiologic status and influencing factors of obesity in children and adolescents

【Objective】 To study the epidemiologic prevalence status and influencing factors of overweight and obesity children and adolescents aged 7~18 years in Nanning,aimed at providing a scientific basis for further study of the pathogenesis of obesity and the development of effective control measures.【Methods】 A stratified random sampling method was used for collecting 5 658 children and adolescents aged 7 to 18 in Nanning.The sample data of height and weight were measured and collected.The sample was screened based on the diagnostic criteria of Body mass index reference norm for screening overweight and obesity in Chinese children and adolescents.The overweight and obesity children and adolescents were diagnosed and inspected the influencing factors using multiple stepwise regression analysis.【Results】 The detection rate of overweight children and adolescents aged 7 to 18 was 10.12%.Obesity rate was 8.48% in Nanning.The overweight and obesity prevalence in boys was significantly higher than that in girls(P 0.01);the rates of each age group of overweight and obesity were significantly different(P 0.05).The data from the standard regression coefficient showed the most influential variable to the least influential variable on overweight and obesity: the history of obese parents,watching television(video games) time,outdoor exercise time,eating greasy food and sweets,speed of eating,birth weight,and infant 4 months feeding.【Conclusion】 The incidence levels of overweight and obesity children and adolescents aged 7 to 18 in Nanning area are close to the national average.The major influencing factors on obesity children and adolescents include heredity,dietary custom and exercise.