Objective: To describe the prevalence of type 2 diabetes mellitus( T2 DM) in rural Deqing County, Zhejiang Province, and explore its risk factors.
Methods: Random cluster sampling was used to select 8 rural communities in Deqing County, Zhejiang Province, and a cross-sectional survey was conducted in 2006-2008, 2011-2012 and 2013-2014, respectively. Totally, 6562 eligible subjects were investigated in 2006-2008, 11 763 eligible subjects in 2011-2012, and 10 904 eligible subjects in 2013-2014. Data on demography, life style and disease history, and physical examination such as height, weight and blood pressure were collected. Also, fasting plasma glucose was tested. T2 DM was defined as who having fasting plasma glucose ≥7. 0 mmol/L or was diagnosed by doctors or receiving diabetic treatment.
Results: In 2006-2008, 2011-2012 and 2013-2014, the standardized prevalences of T2 DM were 1. 2%, 1. 6% and 2. 1% and those of impaired fasting glucose( IFG) were 7. 2%, 18. 7% and22. 8%, respectively. There were increasing trends over years for both. After adjustment for other covariates in logistic regression, age( compared with age between 18 to 39. 9 years old: aOR_(40-59. 9)= 5. 20, 95% CI 2. 74-9. 89; aOR_(60-)= 8. 02, 95% CI 4. 19-15. 35), female( aOR = 1. 23, 95% CI 1. 02-1. 49), family history of T2 DM( aOR =4. 86, 95% CI 3. 49-6. 77), overweight/obesity( overweight: aOR = 1. 88, 95% CI1. 61-2. 20; obesity: aOR = 5. 10, 95% CI 4. 06-6. 41), hypertension( aOR = 2. 84, 95% CI 2. 44-3. 31), having meat mainly( aOR = 2. 25, 95% CI 1. 89-2. 69) and tea drinking( aOR = 0. 81, 95% CI 0. 68-0. 95) were significantly correlated with T2 DM.
Conclusion: The prevalence of T2 DM increased over time in rural Deqing County, China. Age, gender, family history of T2 DM, overweight or obesity, hypertension, diet and drinking tea were significantly related to T2 DM.
Keywords: epidemic; prevalence; risk factor; rural adults; type 2 diabetes mellitus.