Table 2. Univariate and multivariate analysis of clinicopathological variables for OS in lung adenocarcinoma.

Subgroup	Univariable analysis			Multivariable analysis
	HR (95% CI)	P value		HR (95% CI)	P value
Age
>60 years	1.00			1.00
≤60 years	0.74 (0.32 to 1.70)	0.472		0.43 (0.15 to 1.17)	0.099
Sex
Male	1.00			1.00
Female	1.63 (0.69 to 3.81)	0.262		2.57 (0.87 to 7.61)	0.090
Smoking
No	1.00			1.00
Yes	1.12 (0.44 to 2.87)	0.811		4.52 (1.24 to 16.43)	0.022
Pathological T stage
T1a	1.00			1.00
T1b	0.00 (0.00 to 0.00)	0.983		0.00 (0.00 to 0.00)	0.984
T1c	0.20 (0.02 to 2.09)	0.180		0.22 (0.02 to 3.10)	0.262
T2a	0.15 (0.01 to 1.80)	0.136		0.23 (0.01 to 3.70)	0.298
T2b	0.23 (0.03 to 1.92)	0.175		0.37 (0.04 to 3.80)	0.401
T3	1.07 (0.12 to 9.65)	0.953		2.94 (0.21 to 40.71)	0.421
T4	3.15 (0.37 to 26.72)	0.294		9.48 (0.72 to 125.41)	0.088
Pathological N stage
N0	1.00			1.00
N1	0.55 (0.19 to 1.56)	0.263		2.14 (0.58 to 7.81)	0.251
N2	0.82 (0.16 to 4.22)	0.810		0.69 (0.09 to 5.38)	0.730
B3GNT3 expression
Negative	1.00			1.00
Positive	1.82 (0.71 to 4.66)	0.213		2.22 (0.64 to 7.69)	0.206