Multiple Cox regression analyses showing factors independently associated with incident prediabetes.

aNatural-log-transformed before analysis.bModel 1: Multiple adjustments made for age, sex, BMI and fasting glucose.cModel 2: Multiple adjustments made for age, sex, BMI, fasting glucose and 2-hr glucose.dModel 3: Multiple adjustments made for age, sex, BMI and HOMA-IR.BMI: Body mass index; FPG: Fasting plama glucose; 2 hrG: 2 hr post-OGTT glucose; HOMA-IR: homeostasis model assessment index for insulin resistance; HR: Hazard ratio; CI: Confidence interval; P: P-value.