| Objectives:In this paper,the indicators of body and the characteristics of daily life activities of middle-aged and elderly people were obtained by means of experimental measurements and questionnaire survey,and the epidemiological characteristics of diabetes mellitus in middle-aged and elderly people were analyzed.The relationship between obesity,lifestyle and the prevalence of diabetes mellitus was analyzed by Logistic regression analysis.The relationships between BMI,WC,smoking and diabetes mellitus were detected,as well as whether there was a dose-response relation between them.This study provides a scientific foundation for preventing the diabetes in the early time,and then decreasing the occurrence of this disease.Objects and methods:A cross-sectional survey was conducted among 3000 urban residents aged 45 years old or above in respectively in Jiyuan in Henan province,jihua in Zhejiang province,Yangxin in Hubei province and Huainan in Anhui province.The main contents of this survey include:using standardized operational methods to measure the body indicators of the targets,such as height(Ht),Weight(Wt),Waist circumference(WC),Hip circumference(HC),Body mass index(BMI)and other relative anthropometric indicators;The information of social demography such as educational background and daily life activites such as smoking was collected by questionnaire.Diabetic patients in this study were diabetic patients who were taking diabetes drugs or receiving diabetic diet treatment,based on the diagnosis certificate issued by corresponding hospitals.The Logistic regression analysis for the relations between BMI,WC,smoking,sleep and prevalence of diabetes OR(Odds Ratio)was conducted by employing SPSS23.0,and the Confidence Interval was 95%(95%CI).This work can estimate the risk of obesity,lifestyle and diabetes.In addition,the work employed Stata12.0 to analyze the dose-response,and then to explore whether the dose can influence the relation between obesity,lifestyle and diabetes mellitus.Results:1.In this survey,3000 questionnaires were issued and 2740 were valid.The effective rate achieved 91.3%,of which 1237 were male and 1503 were female,and the ratio of male and female was 0.82.1.The prevalence rate of diabetes was 11.4%,of which the male prevalence rate was 12.5%,the female prevalence rate was 10.4%,and the prevalence rate of male diabetes was slightly higher than that of women.2.Logistic regression analysis showed that compared with BMI<24 kg/m2,male diabetes whose BMI was 24-27.9 kg/m2.2.28-29.9 Kg/m2.BMI>30 kg/m2 r isk OR respectively:1.59(95%CI:1.07-2.36,P<0.05),5.13(95%CI:3.10-9.12,P<0.001),10.91(95%CI:5.17-23.02,P<0.001);The odds ratios for diabetes in females wer e as follows:1.22(95%CI:0.84-1.80,P>0.05),1.75(95%CI:0.93-3.29,P>0.05),8.03(95%CI:4.63-13.89,P<0.001).Compared with the WC<85cm,men whose WC is am ong 85-94cm,95-104cm,≥ 105cm suffered from diabetes risk OR respectively:1.33(95%CI:0.82-2.16,P>0.05),1.91(95%CI:1.21-2.04,P<0.01),4.58.(95%CI:2.33-8.99,P<0.001);The odds ratios of diabetes risk for females were:1.89(95%CI:1.07-3.32,P<0.05),2.54(95%CI:1.44-4.48,P<0.01),4.43(95%CI:2.35-8.38,P<0.001).With the amount of smokin less than or equal to 9 cigarettes/day,10-19 cigarettes/day,20-29 cigarettes/day,more than 30 cigarettes/day,male diabetes risk OR was 1.49(95%CI:0.87-2.54,P>0.05),2.62(95%CI:1.75-3.94,P<0.001),4.59(95%CI:2.22-9.51,P<0.001).The logistic regression model was not employed because of the low number of women smoking in this survey.There was no significant correlation be tween the male sleep time and the female sleep time and the prevalence of diabet es.3.Dose-response analysis showed that there was a dose-response relationship between BMI and diabetes,and the OR value of diabetes increased by 1.03 for every 1 kg/m2 increase of BMI in men.(95%CI:1.02-1.05,P<0.0001);Female BMI increased by 1.03 per 1 kg/m2 diabetes mellitus(95%CI:1.01-1.04,P<0.0001).The OR value of diabetes increased by 1.04(95%CI:1.02-1.05,P<0.0001)for every 5 cm increase of WC in men.;The OR value of diabetes increased by 1.06.(95%CI:1.03-1.09,P<0.0001)for every 5 cm increase of WC in women.There was a dose-response relationship between smoking and diabetes,and the OR value of diabetes increased by 1.04 per day,if a cigarette is added.(95%CI:1.03-1.05,P<0.0001).Conclusion:1.The prevalence rate of diabetes at this survey was 11.4%,which is slightly higher than that published by the WHO in 2016 about the prevalence of diabetes in China(9.4%)The prevalence of diabetes in females was slightly lower than that in males.2.Obesity is a risk factor of inducing mellitus.The prevalence of diabetes with high BMI and WC in obese population is significantly higher than that with low BMI and WC,and there is a dose-response relationship between BMI and WC and the prevalence of diabetes.The prevalence of diabetes increase with that of BMI and WC in both males and females.3.Smoking is also a risk factor of diabetes,and there is a dose-response relationship between smoking and the prevalence of diabetes.The risk of diabetes is increasing with the increasing of daily smoking.4.Although too little and too much sleep may increase the prevalence of diabetes,there is no statistical significance. |