Prognostic Factors and Nomograms for Overall and Cancer-Specific Survival of Patients with Uveal Melanoma without Metastases: A SEER Analysis of 4119 Cases

Table 1

Baseline characteristics of training group and validation group.

	Overall (N = 4119)		Training group (N = 2883)		Validation group (N = 1236)		value
	Number	Percent	Number	Percent	Number	Percent
Age, years							0.750
≤57	1550	37.6	1078	37.4	472	38.2
58–79	2111	51.3	1478	51.3	633	51.2
≥80	458	11.1	327	11.3	131	10.6
Sex							0.315
Male	2167	52.6	1502	52.1	665	53.8
Female	1952	47.4	1381	47.9	571	46.2
Race
White	4030	97.8	2819	97.8	1211	98.0	0.884
Black	27	0.7	20	0.7	7	0.6
Other	62	1.5	44	1.5	18	1.5
Marital status							0.773
Married	2733	66.4	1900	65.9	833	67.4
Single	611	14.8	430	14.9	181	14.6
Divorced/separated	363	8.8	257	8.9	106	8.6
Widowed	412	10.0	296	10.3	116	9.4
Year of diagnosis							0.674
2004–2007	1358	33.0	953	33.1	405	32.8
2008–2011	1224	29.7	886	30.0	358	29.0
2012–2015	1537	37.3	1064	36.9	473	38.3
Laterality							0.450
Left	2044	49.6	1422	49.3	622	50.3
Right	2072	50.3	1458	50.6	614	49.7
Bilateral	3	0.1	3	0.1	0	0
Primary site							0.450
Choroid	3652	88.7	2563	88.9	1089	88.1
Ciliary body	396	9.6	275	9.5	121	9.8
Iris	71	1.7	45	1.6	26	2.1
Histological type							0.858
Spindle cell	428	10.4	295	10.2	133	10.8
Epithelioid cell	119	2.9	85	2.9	34	2.8
Mixed cell	339	8.2	233	8.2	106	8.6
Other	34	0.8	26	0.9	8	0.6
Unknown	3199	77.7	2244	77.8	955	77.3
T-stage							0.183
T1	1516	36.8	1053	36.5	463	37.5
T2	1797	43.6	1241	43.0	556	45.0
T3	709	17.2	516	17.9	193	15.6
T4	97	2.4	73	2.5	24	1.9
Treatment							0.660
Surgery only	940	22.8	647	22.4	293	23.7
Radiation only	2851	69.2	2007	69.6	844	68.3
Surgery + radiation	328	8.0	229	7.9	99	8.0
Sequence number							0.608
Only one	2960	71.9	2065	71.6	895	72.4
More	1159	28.1	818	28.4	341	27.6