Table 2

Multivariable association between clinical variables, POC capillary glucose, and presence of diabetes

AUCP*Calibration χ2 (P)IDI (P)
Clinical variables alone
Model 1 = age + BMI + hypertension0.670 (0.585–0.755)<0.00015.67 (0.13)N/A
Model 1 + waist0.694 (0.621–0.766)<0.00015.73 (0.13)N/A
Model 1 + hip0.681 (0.601–0.760)<0.00010.79 (0.85)N/A
Model 1 + WHR0.680 (0.600–0.760)<0.00011.69 (0.64)N/A
Mohan's diabetes risk score0.662 (0.581–0.743)<0.00017.43 (0.06)N/A
Ramachandran's diabetes risk score0.678 (0.597–0.759)<0.00010.75 (0.86)N/A
POC glucose alone0.869 (0.809–0.929)N/A3.87 (0.28)N/A
Clinical variables + POC glucose§
Model 2 = Model 1 + POC glucose0.867 (0.803–0.932)0.722.11 (0.55)1.64 (0.04)
Model 2 + waist0.868 (0.804–0.932)0.892.14 (0.54)1.74 (0.02)
Model 2 + hip0.875 (0.813–0.937)0.371.32 (0.72)1.72 (0.04)
Model 2 + WHR0.868 (0.803–0.932)0.742.12 (0.55)1.63 (0.04)
Mohan's diabetes risk score + POC glucose0.879 (0.819–0.938)0.241.77 (0.63)0.36 (0.54)
Ramachandran's diabetes risk score + POC glucose0.874 (0.812–0.935)0.441.83 (0.61)0.21 (0.62)
  • WHR, waist-to-hip ratio.

  • *Compared to AUC of POC glucose alone.

  • †Hosmer and Lemeshow calibration χ2 test and the accompanying P value, based on 5 subgroups of participants and 3 df.

  • ‡IDI and P value comparing POC glucose alone and POC glucose + clinical variables.

  • §All P values <0.0001 for AUC comparison between models with clinical variables alone and the equivalents with POC glucose.