温州市小学生超重肥胖现状及其影响因素分析

目的了解浙江省温州市小学生超重肥胖的流行现状,探讨肥胖的危险因素。方法采用多阶段分层整群抽样的方法抽取9035例温州市小学生进行体格检查,选取其中369例肥胖儿童作为病例组,并配以同班级同性别的正常体重学生389例作为对照组,开展病例-对照研究,进行膳食、身体活动方式等相关因素的Logistic回归分析。结果温州市小学生总体超重率和肥胖率分别为11.2%和6.4%,男性高于女性(P<0.05)。蔬菜摄入频率高、奶类及其制品摄入频率高、每日运动时间长和每日睡眠时间充足分别为肥胖的保护性因素(多因素Logistic回归分析,OR值分别为0.765、0.807、0.702和0.552,P值分别为0.034、0.024、0.020和0.005),每日静坐时间则为危险因素(OR=1.602,P=0.003)。结论温州市小学生超重肥胖发病率较高,其因素与饮食和身体活动方式密切相关。

Prevalence of overweight and obesity in primary school students from Wenzhou city and the analyses of the risk factors

Objective To investigate the prevalence of overweight and obesity in primary school students from Wenzhou City in Zhejiang Province,and to explore their relative risk factors.Methods Multi-stage stratified cluster sampling method was used to select 9035 children from the primary schools in Wenzhou City for the anthropometric measurements.369 obesity cases and their paired controls of 389 children were chosen based on the large sample investigation.Diet and lifestyle factors were investigated in the nested case-control study for following logistic regression analyses.Results The overall prevalence of overweight and obesity was 11.2% and 6.4%,respectively.Male group had higher prevalence than female(P<0.05).High frequency of vegetable intake,milk and dairy products intake,more physical activity were the benefit factors for preventing obesity(multi-variable logistic regression analysis,OR=0.770,0.821,0.697 and 0.567,P=0.033,0.037,0.017 and 0.008,respectively),whereas longer sedentary behavior was the risk factor of obesity(OR=1.583,P=0.003).Conclusions The prevalence of both overweight and obesity in students from the primary schools were high in Wenzhou city,and were highly related to the diet habit and physical activity.