Table 6. Multivariate analysis for all lung cancer patients.

	Multivariate HR (95% CI)	p value
Age
<45  45–65  >65	[1][Reference] 0.913(0.689–1.210) 1.438(1.091–1.895)	0.527 <0.05*
Smokes
No  Yes	[1][Reference] 1.195(1.028–1.389)	<0.05*
Stages
I  II  III  IV	[1][Reference] 1.377 (0.886–2.142) 2.171(1.481–3.182) 2.842 (1.956–4.130)	0.155 <0.001** <0.001**
Metastasis
No  Yes	[1][Reference] 1.326(1.094–1.607)
CK
Negative  Positive	[1][Reference] 0.748(0.643–0.871)	<0.001**
LDH
Negative  Positive	[1][Reference] 1.282(1.103–1.488)	<0.05*

*p values were calculated using the Cox-proportional hazard model. (*P<0.05, **P<0.001)