Table 2

Predictors of conversion to type 2 diabetes by multiple logistic regression analysis

OR (95% CI)P
Model 1*
    Age (× 1 SD)1.09 (0.87–1.36)0.468
    Female vs. male1.04 (0.66–1.63)0.868
    Family history of diabetes (yes vs. no)1.27 (0.82–1.97)0.283
    IGT vs. NGT2.39 (1.48–3.84)<0.001
    BMI (× 1 SD)1.29 (1.03–1.61)0.024
    SI (× 1 SD)†0.50 (0.37–0.68)<0.001
    AIR (× 1 SD)†0.51 (0.40–0.65)<0.001
Model 2‡
    Age (× 1 SD)1.10 (0.87–1.38)0.426
    Female vs. male1.17 (0.73–1.86)0.522
    Family history of diabetes (yes vs. no)1.25 (0.80–1.96)0.325
    Fasting glucose (× 1 SD)1.51 (1.16–1.96)0.002
    2-h glucose (× 1 SD)1.93 (1.46–2.56)<0.001
    BMI (× 1 SD)1.16 (0.92–1.48)0.211
    SI (× 1 SD)†0.66 (0.48–0.91)0.010
    AIR (× 1 SD)†0.65 (0.50–0.85)0.001
  • ORs are expressed for binary traits or per 1-SD unit change for continuous traits.

  • *Results in model 1 were adjusted also for ethnicity (P = 0.343) and clinical center (P = 0.064).

  • †Log-transformed variables.

  • ‡Results in model 2 were adjusted also for ethnicity (P = 0.393) and clinical center (P = 0.051).