Table 3.

Radiologist group performance

References	Dataset	Sample size (# lesions)		Supplementary information	Operator		Tests
		HCC	non-HCC		Group	Years experience	Sensitivity	Specificity	Accuracy	NPV	PPV
[20]	Internal	50	50		Radiologist-1	6	0.730	0.950
					Radiologist-2	12	0.890	0.960
[21]	Internal	63	57	Age, gender, spatial morphology	Radiologist-1	16	0.937	0.719	0.833
					Radiologist-2	21	0.905	0.912	0.908
[22]	Internal	50	12		Radiologist-1	7	0.920	0.900
					Radiologist-2	8	0.500	0.960
[23]	Internal	218	167		Radiologist-1	8–10	0.722	0.927	0.811	0.71
					Radiologist-2	8–10	0.778	0.927	0.842	0.76
					Radiologist-3	8–10	0.759	0.854	0.800	0.72
	External	264	292		Radiologist-1	8–10	0.761	0.722	0.744	0.70
					Radiologist-2	8–10	0.848	0.778	0.817	0.80
					Radiologist-3	8–10	0.826	0.806	0.817	0.72
[24]	Internal	252	632	age, gender, history, bloods	Radiologist-1	5	0.544	0.785	0.716
					Radiologist-2	> 10	0.639	0.884	0.814
	External	140	452		Radiologist-1	5	0.564	0.770	0.721
					Radiologist-2	> 10	0.757	0.819	0.804
[25]	External	64	1740	age, gender, pertinent medical history	Radiologist-1	5–10	0.412	0.942
					Radiologist-2	5–10	0.457	1.000
					Radiologist-3	5–10	0.571	1.000
					Radiologist-4	10–20	0.686	0.999
					Radiologist-5	10–20	0.706	0.982
					Radiologist-6	10–20	0.829	0.996
[26]	Internal	Not specified (random 25% of total FLL)	Not specified (random 25% of total FLL)		Radiologist-1	3	0.522	0.908
					Radiologist-2	8	0.826	0.947