Table 8. Multivariate analysis of clinicopathological variables and EGFR groupings.

Number	Variable	Hazard ratio	95% CI	P-value
82	Stage 1	1.0		0.001
46	Stage 2	1.55	1.02–2.37	0.04
38	Stage 3A	2.26	1.47–3.49	0.0002
51	Female	1.0
115	Male	1.76	1.17–2.66	0.007
21	EGFR only	1.0		0.0003
75	No EGFR	2.11	1.1–4.08	0.025
70	EGFR coexpression	3.26	1.69–6.27	0.0004

EGFR=epidermal growth factor receptor; 95% CI=95% confidence intervals.