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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 + hypertension 0.670 (0.585–0.755) <0.0001 5.67 (0.13) N/A 
Model 1 + waist 0.694 (0.621–0.766) <0.0001 5.73 (0.13) N/A 
Model 1 + hip 0.681 (0.601–0.760) <0.0001 0.79 (0.85) N/A 
Model 1 + WHR 0.680 (0.600–0.760) <0.0001 1.69 (0.64) N/A 
Mohan's diabetes risk score 0.662 (0.581–0.743) <0.0001 7.43 (0.06) N/A 
Ramachandran's diabetes risk score 0.678 (0.597–0.759) <0.0001 0.75 (0.86) N/A 
POC glucose alone 0.869 (0.809–0.929) N/A 3.87 (0.28) N/A 
Clinical variables + POC glucose§     
Model 2 = Model 1 + POC glucose 0.867 (0.803–0.932) 0.72 2.11 (0.55) 1.64 (0.04) 
Model 2 + waist 0.868 (0.804–0.932) 0.89 2.14 (0.54) 1.74 (0.02) 
Model 2 + hip 0.875 (0.813–0.937) 0.37 1.32 (0.72) 1.72 (0.04) 
Model 2 + WHR 0.868 (0.803–0.932) 0.74 2.12 (0.55) 1.63 (0.04) 
Mohan's diabetes risk score + POC glucose 0.879 (0.819–0.938) 0.24 1.77 (0.63) 0.36 (0.54) 
Ramachandran's diabetes risk score + POC glucose 0.874 (0.812–0.935) 0.44 1.83 (0.61) 0.21 (0.62) 
AUCP*Calibration χ2 (P)IDI (P)
Clinical variables alone     
Model 1 = age + BMI + hypertension 0.670 (0.585–0.755) <0.0001 5.67 (0.13) N/A 
Model 1 + waist 0.694 (0.621–0.766) <0.0001 5.73 (0.13) N/A 
Model 1 + hip 0.681 (0.601–0.760) <0.0001 0.79 (0.85) N/A 
Model 1 + WHR 0.680 (0.600–0.760) <0.0001 1.69 (0.64) N/A 
Mohan's diabetes risk score 0.662 (0.581–0.743) <0.0001 7.43 (0.06) N/A 
Ramachandran's diabetes risk score 0.678 (0.597–0.759) <0.0001 0.75 (0.86) N/A 
POC glucose alone 0.869 (0.809–0.929) N/A 3.87 (0.28) N/A 
Clinical variables + POC glucose§     
Model 2 = Model 1 + POC glucose 0.867 (0.803–0.932) 0.72 2.11 (0.55) 1.64 (0.04) 
Model 2 + waist 0.868 (0.804–0.932) 0.89 2.14 (0.54) 1.74 (0.02) 
Model 2 + hip 0.875 (0.813–0.937) 0.37 1.32 (0.72) 1.72 (0.04) 
Model 2 + WHR 0.868 (0.803–0.932) 0.74 2.12 (0.55) 1.63 (0.04) 
Mohan's diabetes risk score + POC glucose 0.879 (0.819–0.938) 0.24 1.77 (0.63) 0.36 (0.54) 
Ramachandran's diabetes risk score + POC glucose 0.874 (0.812–0.935) 0.44 1.83 (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.

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