Table 3.

Overall survival: multivariable model^*

Model covariate	Adverse effect	Comparison group	P value†	HR (95% CI)
Predictive test	Poor risk	Good risk	.004	2.09 (1.27 to 3.45)
Histological subtype	Mixed or sarcomatoid	Epithelial	.013	1.88 (1.14 to 3.10)
Lymph node status	N1–N2	N0	.013	1.97 (1.15 to 3.38)
Tumor stage	T3–T4	T1–T2	.443	1.24 (0.71 to 2.17)

^*HR = hazard ratio for death; CI = confidence interval.

^†Two-sided Wald test.