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Table 2 Variation in estimated prediabetes prevalence in the literature

From: Global epidemiology of prediabetes - present and future perspectives

Author

Guideline criteria used

Estimated prevalence (%)

IFG or IGT

IFG

IGT

IFG and IGT

HbA1C

HbA1C and IFG

Karve [22]

ADAa

19.8

4.5

11.8

3.5

–

–

ADA†

34.6

19.4

5.4

9.8

–

–

Yip [14]

ADA†

–

53.1

23.8

20.2

–

–

WHO

–

36.0

45.5

15.8

–

–

Blum [23]

ADA†

–

3.0

–

–

24.7

3.2

  1. a1997 guidelines, FPG: 6.1–6.9 mmol/L (110–125 mg/dL); †post 2003 guidelines, FPG: 5.6–6.9 mmol/L (100–125 mg/dL)
  2. ADA American Diabetes Association, FPG Fasting plasma glucose, HbA1C, glycated haemoglobin; IFG Impaired fasting glucose, IGT Impaired glucose tolerance, WHO World Health Organization