Table 3.

Malignant STMs numbers, total STMs numbers, the corresponding FP, and actual malignancy rates by total scores

Score	Malignancy, n	Total, n	FP	Malignancy rates
0	0	6	0.001	0.000
1	0	6	0.002–0.003	0.000
2	0	22	0.004–0.008	0.000
3	2	59	0.008–0.017	0.034
4	3	71	0.013–0.039	0.042
5	5	94	0.027–0.099	0.053
6	8	91	0.048–0.178	0.088
7	22	137	0.100–0.365	0.161
8	41	88	0.189–0.539	0.466
9	52	101	0.326–0.805	0.515
10	56	72	0.512–0.845	0.778
11	58	75	0.726–0.911	0.773
12	50	58	0.798–0.946	0.862
13	56	58	0.912–0.976	0.966
14	38	38	0.959–0.985	1.000
15	32	32	0.985–0.992	1.000
16	14	14	0.993–0.996	1.000
17	1	1	0.997	1.000
18	4	4	0.998–0.999	1.000

FP fitted probabilities, n number of STMs, STMs soft tissue masses