Prevalence And Risk Factors Of Abnormal Glucose Metabolism Amng Overweight And Obesity Schoolchildren In Tianjin

Objects:To investigate the prevalence and the risk factors of abnormal glucose metabolism among overweight and obesity schoolchildren in Tianjin.Methods:A cross-sectional study was conducted with the multi-phasic stratified cluster sampling from May to September in 2010. Finally 5 shools including 3015 students were selected as source in Tianjin. All the students in 5 schools were investigated.887 of overweight and obesity students were detected (394 overweight students, obesity was 493). Among them 333 students whose parents signed the consent received the test of fasting capillary blood glucose, and 105 students whose parents signed the consent went to hospital receiving examinations, including fasting blood glucose, blood lipids, blood pressure, fasting insulin levels, and 2-hour postprandial blood glucose. The prevalences of abnormal glucose metabolism were calculated. A case-control study was conducted. All of the 22 students with abnormal glucose metabolism were as case group, and all of the 83 students without abnormal glucose metabolism were as control group. The data were collected on demographic characteristics. general family situation, basic situation of students, physical activity and exercise, weight, health, diet and health situation of relatives. Physical and laboratory data were collected through physical examination and laboratory test. The multicollinearity diagnosis, principal component analysis, factor analysis, unconditional Logistic regression analysis were used to analyze the risk factors of abnormal glucose metabolism for students with overweight and obesity.Results:1.The survey results showed that the prevalence of DM was 0.95% for overweight and obesity combined group. The prevalences of IGT were 15.24%(16 cases) for overweight and obesity combined group,12.12%(4 cases) for overweight group and 16.67%(12 cases) for obesity group respectively. The prevalences of IFG were 5.71%(6 cases) for overweight and obesity combined group,6.06%(2 cases) for overweight group,5.56%(4 cases) for obesity group respectively. The prevalences of IGR were 20.00%(21 cases) for overweight and obesity combined group,15.15%(5 cases) for overweight group, and 22.22%(16 cases) for obesity group respectively. 2.According to univariate analysis outdoor sports was a protective factor (OR=0.301, 95%CI:0.102～0.893), and long time watching TV/DVD/and playing computer games (OR=1.869,95%CI:1.102～3.061), family history of obesity (OR=3.407,95%CI: 1.118～10.382), hyperinsulinemia (OR=2.789,95%CI:1.052～7.392) and high waist-to-hip ratio (OR=1.956,95%CI:1.238～6.055) were risk factors.3.The results by multivariate logistic regression analysis found that higher family income (OR=0.530,95%CI:0.260～0.802) was the protective factor, hypertension (OR=2.495,95%CI:1.139～4.027), longer time watching TV/DVD/playing computer games (OR=1.895,95%CI:1.415～4.923) and family history of DM (OR=2.648, 95%CI:1.407～5.120) were significantly associated with the risk of abnormal glucose metabolism among 7～18 years old schoolchildren with overweight and obesity.Conclusion:The prevalence rate of abnormol glucose metobolism in overweight and obesity students in Tianjin was relatively higher. Higher family income was the protective factor, hypertension, longer time watching TV/DVD/playing computer games and family history of DM were the risk factors of the abnormal glucose metabolism in obesity, overweight students.