Table 1

 Glucometabolic classification according to the World Health Organization (oral glucose tolerance test) and American Diabetes Association criteria (fasting plasma glucose)

WHO criteria, 1999ADA criteria, 1997WHO total (%)
Normal <6.1IFG ⩾6.1 and <7.0Diabetes ⩾7.0
NGR870 (100.0)00870 (46.6)
IGR (IGT±IFG)494 (72.9)184 (27.1)*0678 (36.3)
Diabetes145 (45.4)88 (27.6)86 (27.0)319 (17.1)
ADA total (%)1509 (80.8)272 (14.6)86 (4.6)1867 (100.0)
WHO criteria, 1999ADA criteria, 2004WHO total (%)
Normal <5.6IFG ⩾5.6 and <7.0Diabetes ⩾7.0
ADA, American Diabetes Association; FPG, fasting plasma glucose; IFG, impaired fasting glucose; IGT, impaired glucose tolerance; IGR, impaired glucose regulation; NFG, normal FPG; NGR, normal glucose regulation; WHO, World Health Organization.
Data are presented as counts and row per cent (%).
*Among those with IFG according to ADA criterion 1997, 87 (32.0%) had IFG only and 97 (35.7%) had IGT and IFG.
†Among those with IFG according to ADA criterion 2004, 109 (18.6%) had IGT only and 97 (16.6%) had IGT and IFG.
NGR717 (82.4)153 (17.6)0870 (46.6)
IGR (IFG±IGT)385 (56.8)293 (43.2)†0678 (36.3)
Diabetes93 (29.1)140 (43.9)86 (27.0)319 (17.1)
ADA total (%)1195 (64.0)586 (31.4)86 (4.6)1867 (100.0)