Study on relationship between BMI, WHR and prevalence rate of IGT

  Objective   To explore the relationship between BMI, WHR and the prevalence rate of IGT in Zunyi, so as to provide scientific informations of IGT for prevention and control.

  Methods   The persons aged 40 and older in Zunyi, were investigated by stratified cluster sampling method.

  Results   The crude prevalence rate of IGT in the whole population was 7.16%.The prevalence rate of IGT in both sexes were 8.34% and 6.29% respectively and increased paralelly with weight (P < 0.001). The IGT prevalence rate of different BMI in community population had a marked difference. The prevalence rate of IGT in overweight and obesity groups were signifcantly higher than in normal weight group (P < 0.001). Their relativerisk (RR) were 2.09 and 2.41 respectively, their 95% confidence interval (CI) were 1.47-2.97 and 1.68-3.47 respectively. The prevalence rate of IGT in obesity of abdominal type group was signifcantly higher than in normal body type group(P < 0.001), RR=1.87, 95%CI was 1.39-2.52.

  Conclusion   Obesity (especially in obesity of abdominal type) affected the prevalence rate of IGT, prevention and intervention of body weight were in urgent need in the middle-aged and elderly.