Table 4—

Risk of IHD events among nondiabetic subjects in the NHS92 according to glucose tolerance stratified by both FPG and 2-h PG after a 75-g OGTT

Glucose tolerance based on FPG criterian
Person-yearsHazard ratio (95% CI)
Analyses with subjects pooled within categories of FPG if FPG 5.6–6.9 mmol/l
 FPG <5.6 mmol/l
  IGT*81,226.93.00 (1.22–7.38)
 FPG 5.6–6.0 mmol/l123,463.61.42 (0.65–3.14)
 FPG 6.1–6.9 mmol/l61,096.11.60 (0.60–3.14)
Analyses with study subjects stratified by both FPG and 2-h PG criteria
 FPG <5.6 mmol/l
  IGT*28981,226.93.07 (1.26–7.56)
 FPG 5.6–6.0 mmol/l
  NGT*38842,458.90.69 (0.22–2.12)
  IGT*15481,004.43.08 (1.26–7.52)
 FPG 6.1–6.9 mmol/l
  NGT*852540.51.09 (0.24–4.90)
  IGT*864555.62.09 (0.67–6.49)
  • Hazard ratios were estimated using Cox proportional hazards models and adjusted for age, sex, and ethnic group.

  • *

    * Glucose tolerance based on 2-h PG criteria.