Table 5.

Roc curve index and analysis.

Contents	SP/AP	Asp/Aap	Combined
Cut off value	0.38	2.41	P = 0.20
AUC	0.91	0.98	0.99
95%CI	0.85–0.96	0.94–1.00	0.96–1.00
P-value (vs. SP/AP)	/	0.01	<0.01