Table IV.

Multivariate analysis of clinicopathological features and survival in patients with lung squamous cell carcinoma.

Variable	No. of patients (%)	P-value	Hazard ratio	95% Confidence interval
Age at surgery (years)		0.179
<68	53 (51.5)		1.461	0.840–2.540
≥68	50 (48.5)
Gender		0.784
Male	97 (94.2)		1.157	0.408–3.281
Female	6 (5.8)
Tumor size (mm)		0.083
≤30	39 (37.9)		1.700	0.933–3.098
>30	64 (62.1)
Infiltrating pattern		0.058
INFc(−)	64 (62.1)		1.723	0.981–3.027
INFc(+)	39 (37.9)
Lymphatic invasion		0.003
ly0-1	84 (81.6)		2.580	1.376–4.839
ly2-3	19 (18.4)

INFc(−)/INFc(+), infiltrating component negative/positive.