Table 2. Major findings of eligible studies.

Author	AUC	Cut-off	Sensitivity	Specificity	TP	FP	FN	TN
Verma (5)	0.81	20	0.98	0.94	98	3	2	51
Verma (13)	0.81	20	0.95	0.85	80	5	4	29
Zhang (14)	0.84	10.6	0.94	0.73	299	183	19	486
Elmahalawy (15)	1.00	20	1.00	1.00	20	0	0	40
Korczyński (16)	0.83	16.4	0.95	0.68	70	21	4	45

AUC, area under curve; TP, true positive; FP, false positive; TN, true negative; FN, false negative.