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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