Table 3

Interpretation of ROC curves
VPG (Ref.) vs CBG HbA1c (Ref.) vs. CBG HbA1c (Ref.) vs. VPG
Positive state for ROC curve 7.0 mmol/L 7% 7%
No. positive 4 7 7
No. negative 665 634 634
Area under curve 0.898 0.754 0.733
Std.Err. 0.036 0.068 0.104
Asympt. Sig. 0.006 0.021 0.033

95% CI

 Lower bound

 Upper bound

0.827

0.970

0.620

0.888

0.529

0.938

Optimal test result for 5.6 5.03 4.6
Sensitivity 75.0% 85.7% 85.7%
Specificity 100 – 21.2% 100 – 50.0% 100 – 73.8%

Muktabhant et al.

Muktabhant et al. BMC Public Health 2012 12:349   doi:10.1186/1471-2458-12-349

Open Data