Table 3. Differential diagnosis of NOA with ROC curves.

Viscoelasticity	AUC	95% CI	Cut-off value	Sensitivity (%)	Specificity (%)	P
Viscosity coefficient	0.834	0.769–0.902	0.615	81.8	79.5	<0.001
Dispersion slope	0.695	0.613–0.780	1.585	70.9	63.8	<0.001
Elasticity	0.796	0.726–0.864	7.115	72.7	72.5	<0.001

AUC, area under the curve; CI, confidence interval; NOA, non-obstructive azoospermia; ROC, receiver operating characteristic.