Table 2.

Main findings of the included studies.

References	TP	FP	FN	TN	SEN	SPE
Dieplinger et al. (8)	123	89	14	25	0.90	0.22
Aldous et al. (9)	25	196	9	765	0.74	0.80
Santhanakrishnan et al. (10)	35	26	15	24	0.70	0.48
Santhanakrishnan et al. (10)	35	16	16	34	0.69	0.68
Wang et al. (11)	50	10	18	29	0.74	0.74
Jakob et al. (12)	65	39	49	50	0.57	0.56
Mueller et al. (13)	104	58	33	56	0.76	0.49
Sinning et al. (14)	81	2,882	27	1,982	0.75	0.41
Jin et al. (15)	154	0	43	106	0.78	1.00
Luo et al. (16)	267	166	109	334	0.71	0.67
Cui et al. (17)	83	13	89	17	0.48	0.57

TP, True positive; FP, False positive; FN, False negative; TN, True negative; SEN, Sensitivity; SPE, Specificity.