Assessment of diagnostic capacity and decision-making based on the 2015 American Thyroid Association ultrasound classification system

Table 2 Studies and number of patients included

Ref.	Very low		Low		Intermediate		High
	Cancer no	Cancer yes	Cancer no	Cancer yes	Cancer no	Cancer yes	Cancer no	Cancer yes
Tang et al[25]	7	1	20	5	17	7	0	8
Trimboli et al[28]	15	2	43	8	68	15	6	18
Xu et al[29]	36	2	190	21	212	59	109	277
Persichetti et al[30]	134	3	255	8	295	18	104	127
Macedo et al[31]	11	0	10	0	13	5	1	5
Chng et al[32]	16	1	60	10	18	12	13	27
Huang et al[34]	14	0	109	18	57	32	4	15
Barbosa et al[35]	4	1	33	10	27	9	10	46
Hong et al[36]	35	0	174	6	109	55	37	263
Valderrabano et al[37]	25	0	127	32	61	13	16	20
Xiang et al[38]	170	0	112	24	8	11	32	289
Gao et al[39]	178	0	339	20	107	55	233	1606
Shen et al[40]	187	6	149	17	348	42	150	708
Total	832	16	1621	179	1340	333	715	3409