Increasing Prevalence of Type 2 Diabetes in Chinese Adults in Shanghai

  1. Wei Jian Zhong, MD, PHD1
  1. 1Shanghai Municipal Center for Disease Control and Prevention, Shanghai, People’s Republic of China
  2. 2Department of Epidemiology, School of Public Health, Fudan University, Shanghai, People’s Republic of China
  3. 3Key Laboratory of Public Health Safety, Ministry of Education, Fudan University, Shanghai, People’s Republic of China
  1. Corresponding author: Wang Hong Xu, wanghong.xu{at}, or Wei Jian Zhong, wjzhong{at}


OBJECTIVE Our objective was to determine the secular trend in prevalence of type 2 diabetes in Shanghai, China.

RESEARCH DESIGN AND METHODS Two consecutive population-based surveys for type 2 diabetes were conducted in randomly selected adults aged 35–74 years in Shanghai in 2002–2003 (n = 12,329) and in 2009 (n = 7,423). Diagnosed type 2 diabetes was determined based on self-report, whereas those undiagnosed were identified by measured fasting and postload glucose according to 2009 American Diabetes Association criteria.

RESULTS Age-standardized prevalence of diagnosed and undiagnosed type 2 diabetes increased from 5.1 and 4.6% in 2002–2003 to 7.4 and 5.2% in 2009. The prevalence of type 2 diabetes increased with age and was higher among men and in urban residents in both surveys (P < 0.001). Between the two surveys, the increase in the prevalence was more evident in the rural population (P < 0.001) and appeared more rapid in younger birth cohorts (P < 0.05).

CONCLUSIONS Our results suggest that Shanghai has experienced an increasing burden of type 2 diabetes.

  • Received June 27, 2011.
  • Accepted January 15, 2012.

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  1. Diabetes Care vol. 35 no. 5 1028-1030
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