Table 2

Baseline glucose tolerance according to the A1C categories and OGTT

A1C categoriesTotal
OGTT<5.7% (NGT)5.7–6.4% (at risk for diabetes)>6.4% (type 2 diabetes)
NGT6441322778
Prediabetes2401034347
Type 2 diabetes9121031
Total893247161,156
  • κ coefficient 0.17 with 95% CI (0.11–0.23); weighted κ 0.20 with 95% CI (0.14–0.26).