Exploring the Risk Factors of Conjunctival Squamous Cell Carcinoma and Establishing a Prognostic Model: Retrospective Study

Table 1

Baseline characteristics of patients.

Variable	Train			Test
	Alive (324)	Dead (196)	value	Alive (77)	Dead (53)	value
Age	62 [51-71]	77 [69-84]	<0.001	62 [53-70]	77 [64-84]	<0.001
Sex			0.008			0.633
Male	224 (69.1)	157 (80.1)		57 (74)	42 (79.2)
Female	100 (30.9)	39 (19.9)		20 (26)	11 (79.2)
Grade			0.011			0.083
I	78 (24.1)	43 (21.9)		22 (28.6)	11 (20.8)
II	46 (14.2)	38 (19.4)		16 (20.8)	7 (13.2)
III	13 (4.0)	18 (9.2)		1 (1.3)	5 (9.4)
IV	0 (0.0)	2 (1.0)		2 (2.6)	0 (0.0)
Unknown	187 (57.7)	95 (48.5)		36 (46.8)	30 (56.6)
Laterality			0.772			0.823
Left	155 (47.8)	100 (51.0)		36 (46.8)	22 (41.5)
Right	165 (50.9)	94 (48.0)		40 (51.9)	30 (56.6)
Unknown	4 (1.2)	2 (1.0)		1 (1.3)	1 (1.9)
Stage			0.816			0.979
Localized	273 (84.3)	161 (82.1)		65 (84.4)	45 (84.9)
Regional	18 (5.6)	12 (6.1)		4 (5.2)	3 (5.7)
Unknown	33 (10.2)	23 (11.7)		8 (10.4)	5 (9.4)
T			0.551			0.25
TX	188 (58.0)	125 (63.8)		40 (51.9)	29 (54.7)
T1	65 (20.1)	32 (16.3)		20 (26.0)	6 (11.3)
T2	28 (8.6)	17 (8.7)		9 (11.7)	8 (15.1)
T3	36 (11.1)	16 (8.2)		6 (7.8)	2 (3.8)
T4	7 (2.2)	6 (3.1)		2 (2.6)	29 (54.7)
N			0.369			0.34
N1	45 (13.9)	25 (12.8)		11 (14.3)	4 (7.5)
N2	276 (85.2)	171 (87.2)		65 (84.4)	49 (92.5)
N3	3 (0.9)	0 (0.0)		1 (1.3)	0 (0.0)
M			0.448			0.528
M0	291 (89.8)	171 (87.2)		69 (89.6)	50 (94.3)
MX	33 (10.2)	25 (12.8)		8 (10.4)	3 (5.7)
Surgery			0.528			0.529
Yes	279 (86.1)	164 (83.7)		64 (83.1)	47 (88.7)
No/unknown	45 (13.9)	32 (16.3)		13 (16.9)	6 (11.3)
Race			0.001			0.109
Black	12 (3.7)	6 (3.1)		2 (2.6)	3 (5.7)
Other	38 (11.7)	5 (2.6)		11 (14.3)	2 (3.8)
White	274 (84.6)	185 (94.4)		64 (83.1)	48 (90.6)