Table 2.

Independent factors for the prognosis of lung cancer brain metastasis

Independent risk factors	Regression coefficient	SE	P	HR	95% CI
Age	0.409	0.036	< 0.001	1.506	1.402–1.617
Marital status	− 0.218	0.036	< 0.001	0.804	0.749–0.864
Gender	− 0.215	0.037	< 0.001	0.806	0.751–0.866
Race	− 0.110	0.030	< 0.001	0.896	0.844–0.951
Grade	0.170	0.028	< 0.001	1.185	1.123–1.251
T stage	0.088	0.018	< 0.001	1.092	1.054–1.132
Primary site	− 0.797	0.074	< 0.001	0.451	0.390–0.521