title: Age- and sex-specific prevalence of diabetes and impaired glucose regulation in 11 Asian cohorts.
abstract: OBJECTIVE
  To report the age- and sex-specific prevalence of diabetes and impaired glucose regulation (IGR) according to revised World Health Organization criteria for diabetes in Asian populations.
  
  
  METHODS
  We performed 11 studies of 4 countries, comprising 24,335 subjects (10,851 men and 13,484 women) aged 30-89 years who attended the 2-h oral glucose tolerance test and met the inclusion criteria for data analysis.
  
  
  RESULTS
  The prevalence of diabetes increased with age and reached the peak at 70-89 years of age in Chinese and Japanese subjects but peaked at 60-69 years of age followed by a decline at the 70 years of age in Indian subjects. At 30-79 years of age, the 10-year age-specific prevalence of diabetes was higher in Indian than in Chinese and Japanese subjects. Indian subjects also had a higher prevalence of IGR in the younger age-groups (30-49 years) compared with that for Chinese and Japanese subjects. Impaired glucose tolerance was more prevalent than impaired fasting glycemia in all Asian populations studied for all age-groups.
  
  
  CONCLUSIONS
  Indians had the highest prevalence of diabetes among Asian countries. The age at which the peak prevalence of diabetes was reached was approximately 10 years younger in Indian compared with Chinese and Japanese subjects. Diabetes and IGR will be underestimated in Asians based on the fasting glucose testing alone.
authors.affiliation: Department of Epidemiology and Health Promotion, National Public Health Institute, Helsinki, Finland. qing.qiao@ktl.fi
authors.forename: Qing
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authors.lastname: Qiao
authors.forename: Gang
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authors.lastname: Hu
authors.forename: Jaako
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authors.forename: Tomoko
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authors.forename: Beverley
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authors.forename: S Ramnathan
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authors.forename: Yutaka
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authors.lastname: Kiyohara
authors.forename: Isao
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authors.lastname: Okubo
authors.forename: Masaki
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authors.lastname: Nagai
authors.forename: Satomi
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authors.lastname: Shibazaki
authors.forename: Ze
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authors.lastname: Yang
authors.forename: Zhifu
authors.initials: Z
authors.lastname: Tong
authors.forename: Qinying
authors.initials: Q
authors.lastname: Fan
authors.forename: Binzhi
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authors.lastname: Wang
authors.forename: Suok Kai
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authors.lastname: Chew
authors.forename: Bee Yian
authors.initials: BY
authors.lastname: Tan
authors.forename: Derrick
authors.initials: D
authors.lastname: Heng
authors.forename: Shanta
authors.initials: S
authors.lastname: Emmanuel
authors.forename: Naoko
authors.initials: N
authors.lastname: Tajima
authors.forename: Yasuhiko
authors.initials: Y
authors.lastname: Iwamoto
authors.forename: C
authors.initials: C
authors.lastname: Snehalatha
authors.forename: V
authors.initials: V
authors.lastname: Vijay
authors.forename: A
authors.initials: A
authors.lastname: Kapur
authors.forename: Yanhu
authors.initials: Y
authors.lastname: Dong
authors.forename: Hairong
authors.initials: H
authors.lastname: Nan
authors.forename: Weiguo
authors.initials: W
authors.lastname: Gao
authors.forename: Haiyan
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authors.lastname: Shi
authors.forename: Fangming
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authors.lastname: Fu
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D044466:Asian People; D001786:Blood Glucose / Q000378:metabolism; D002681:China / Q000453:epidemiology; D015331:Cohort Studies; D003920:Diabetes Mellitus / Q000453:epidemiology*; D005260:Female; D018149:Glucose Intolerance / Q000453:epidemiology*; D006801:Humans; D007564:Japan / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D012727:Sex Characteristics
chemical_list: D001786:Blood Glucose