Table 3.

The discriminative value of each parameter

Variables	AUC	95% CI	P values	Cutoff value	Sensitivity	Specificity	PPV	NPV
Height	0.99	0.97 – 1.0	<0.01	1.5 (cm)	95	95.2	95	95.2
HWR	0.97	0.94 – 1.0	<0.01	0.9	90	100	100	91.2
Cyst size	0.81	0.71 – 0.91	<0.01	7.9 (cm)	82.5	83.3	82.5	83.3
Age	0.88	0.81 – 0.96	<0.01	43 (y)	92.5	76.2	78.7	91.4

AUC, area under the curve; CI, confidence interval; HWR, Height-Width ratio; PPV, positive predictive values; NPV, negative predictive values.