TABLE 4

Multiple logistic regression analysis examining the combined effect of AIR and intact PI (or split PI) on risk of incident diabetes in the IRAS

Independent variableOR95% CIχ2
(i) Model with intact PI*
 AIR0.330.22–0.4931.6
 Intact PI1.451.16–1.8310.2
(ii) Model with split PI*
 AIR0.320.22–0.4832.3
 Split PI1.651.32–2.0619.7
  • Models are adjusted for age, sex, ethnicity, clinic, BMI, IGT, and S1. ORs refer to risk of diabetes per SD increase in independent variable.

  • *

    * Areas under receiver operator characteristic curves: model (i) = 0.833; model (ii) = 0.837 (difference = NS).

  • P < 0.0001;

  • P < 0.001.