Risk of cardiovascular death in patients with hepatocellular carcinoma based on the Fine-Gray model

Table 2 Comparison of basic characteristics between patients in training and validation sets

Characteristics	Labels	Training set (N1 = 15081)	Validation set (N2 = 6464)	P value
Age				0.835
	< 60	5360 (35.54)	2307 (35.69)
	≥ 60	9721 (64.46)	4157 (64.31)
Sex				0.994
	Male	11555 (76.62)	4953 (76.62)
	Female	3526 (23.38)	1511 (23.38)
Race				0.598
	White	10340 (68.56)	4449 (68.83)
	Black	2087 (13.84)	862 (13.34)
	Other	2654 (17.60)	1153 (17.83)
Marital status				0.552
	Married	7953 (52.74)	3455 (53.45)
	Unmarried	3348 (22.20)	1430 (22.12)
	DSW	3780 (25.06)	1579 (24.43)
Year of diagnosis				0.381
	2010-2011	4395 (29.14)	1839 (28.45)
	2012-2013	4991 (33.09)	2198 (34.00)
	2014-2015	5695 (37.77)	2427 (37.55)
AFP				0.231
	Normal	4390 (29.11)	1934 (29.92)
	Elevated	10691 (70.89)	4530 (70.08)
Grade				0.160
	GradeⅠ	6574 (43.59)	2849 (44.07)
	GradeⅡ	3692 (24.48)	1507 (23.31)
	GradeⅢ	2864 (18.99)	1289 (19.94)
	GradeⅣ	1951 (12.94)	819 (12.68)
Tumor size				0.201
	≤ 2 cm	2301 (15.26)	926 (14.33)
	2-5 cm	6986 (46.32)	3043 (47.08)
	> 5 cm	5794 (38.42)	2495 (38.59)
T stage				0.193
	T1	7025 (46.58)	3024 (46.78)
	T2	4018 (26.64)	1650 (25.53)
	T3	3585 (23.77)	1606 (24.85)
	T4	453 (3.01)	184 (2.84)
N stage				0.554
	N0	14087 (93.41)	6052 (93.63)
	N1	994 (6.59)	412 (6.37)
M stage				0.680
	M0	13724 (91.00)	5871 (90.83)
	M1	1357 (9.00)	593 (9.17)
Surgery				0.877
	No	10574 (70.11)	4539 (70.22)
	Yes	4507 (29.89)	1925 (29.78)
Radiotherapy				0.675
	None/unknown	13588 (90.10)	5812 (89.91)
	Yes	1493 (9.90)	652 (10.09)
Chemotherapy				0.180
	None/unknown	7441 (49.34)	3125 (48.34)
	Yes	7640 (50.66)	3339 (51.66)

DSW: Divorced, separated, and widowed; AFP: Alpha fetoprotein.