Table 2

Determinations on the basis of emergency department HbA1c and follow-up OGTT

n (%)
HbA1c-based emergency department diagnosis*
 Normal (HbA1c <5.7%)351 (56.8)
 Prediabetes (HbA1c 5.7–6.4%)204 (33.0)
 Diabetes (HbA1c ≥6.5%)63 (10.2)
HbA1c-based emergency department diagnosis using higher-risk cutoffs
 Normal/lower risk (HbA1c <6.0%)470 (76.1)
 High risk for diabetes (HbA1c 6.0–6.4%)85 (13.8)
 Diabetes (HbA1c ≥6.5%)63 (10.2)
Glucose-based follow-up diagnosis
 Normal356 (57.6)
 Prediabetes197 (31.9)
 Diabetes65 (10.5)
  • *Based on the 2010 ADA guidelines: HbA1c 5.7–6.4% = prediabetes, HbA1c ≥6.5% = diabetes.

  • †Based on FBS and/or 2-h OGTT findings from the general clinical research center follow-up visit.