title: Increasing prevalence of type 2 diabetes in Chinese adults in Shanghai.
abstract: OBJECTIVE
  Our objective was to determine the secular trend in prevalence of type 2 diabetes in Shanghai, China.
  
  
  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.
authors.affiliation: Shanghai Municipal Center for Disease Control and Prevention, Shanghai, People's Republic of China.
authors.forename: Rui
authors.initials: R
authors.lastname: Li
authors.forename: Wei
authors.initials: W
authors.lastname: Lu
authors.forename: Qing Wu
authors.initials: QW
authors.lastname: Jiang
authors.forename: Yan Yun
authors.initials: YY
authors.lastname: Li
authors.forename: Gen Ming
authors.initials: GM
authors.lastname: Zhao
authors.forename: Liang
authors.initials: L
authors.lastname: Shi
authors.forename: Qun Di
authors.initials: QD
authors.lastname: Yang
authors.forename: Ye
authors.initials: Y
authors.lastname: Ruan
authors.forename: Junyi
authors.initials: J
authors.lastname: Jiang
authors.forename: Sheng Nian
authors.initials: SN
authors.lastname: Zhang
authors.forename: Wang Hong
authors.initials: WH
authors.lastname: Xu
authors.forename: Wei Jian
authors.initials: WJ
authors.lastname: Zhong
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002681:China / Q000453:epidemiology; D003924:Diabetes Mellitus, Type 2 / Q000453:epidemiology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D055815:Young Adult