Table 3.

Multivariable associations of selected predictors for progression to microalbuminuria

Predictor	OR	95% CI	β coefficienta
HbA1c (%), transformedb	1.26	1.09, 1.45	0.206
AER (μg/min)	1.09	1.07, 1.11	0.076
WHR, transformedc	1.20	0.90, 1.61	0.163
BMI (kg/m2)	1.07	1.03, 1.10	0.059
Ever smoking	1.40	1.16, 1.69	0.300
Intercept			−9.883
c-statisticd		0.71	0.69

^a β coefficients were multiplied by a shrinkage factor of 0.88 to improve predictions in future patients

^bLog_e(HbA_1c) × 10

^cWHR × 10

^dEstimated in the development set and corrected for optimism after bootstrapping