北京西城区中小学生超重与肥胖影响因素分析

目的 探讨北京西城区中小学生2010—2011年超重和肥胖流行状况及相关危险因素。方法 应用多层整群随机抽样方法对西城区2 261名11~18岁中小学生进行问卷调查和现场体检，对相关因素进行logistic多元回归分析。结果 学生肥胖发生率为7.6%，其中女生为8.2%，男生为6.9%；肥胖学生中每天运动<60 min者占74.9%，明显高于体重正常组的38.7%，差异有统计学意义（P<0.001）；有肥胖家族史的青少年肥胖发生率为53.8%；logistic多元回归分析显示，女性、使用电脑时间长、不规律体育运动和肥胖家族史是超重和肥胖的危险因素。结论 西城区中小学生超重和肥胖与多种原因相关，除不良生活方式外，家族遗传也是常见的危险因素。

Prevalence and influencing factors of overweight and obesity among primary and middle school students

Objective To investigate the prevalence and risk factors of overweight and obesity among primary and middle school students in Beijing from 2010 to 2011.Methods A total of 2 261 primary and middle school students aged 11-18 years were selected using population-based stratified cluster sampling from Xicheng district of Beijing and surveyed with a standardized questionnaire and physical examination.Logistic regression was used to analyze major risk factors.Results The overall prevalence rate of obesity among the students was 7.6%(8.2%in females and 6.9%in males).There were 74.9%of the obese students having physical exercise less than 60 minutes per day and the ratio was significantly higher than that of normal weight students(38.7%)(P<0.001).The prevalence rate of obesity was 53.8%among the students with familial history of obesity.Logistic regression analyses showed that female,spending much more time on computer use,irregular physical exercise,and family history of obesity were independently related to overweight and obesity.Conclusion The prevalence overweight and obesity is associated with a variety of factors,including genitic history and unhealthy life styles among primary and middle school students in Xicheng district of Beijing.