Table 2.

Diagnostic performance of urinary C-peptide creatinine ratio at different cut-off values.

Cut-off (nmol/mmol)	Sensitivity (%)	Specificity (%)	PPV (%)	NPV (%)	Accuracy (%)	Youden index
<0.15	84.2	96.7	88.9	95.1	93.7	0.809
<0.20	94.7	95	85.7	98.3	94.9	0.897
<0.25	100	91.7	79.2	100	93.7	0.917
<0.30	100	88.3	73.1	100	91.1	0.883
<0.35	100	85	67.9	100	88.6	0.85

Bold values indicate statistically significant differences (p<0.05)