Table 4.

Univariate analyses for OS and PFS

Factors	N (%)	OS P-value	PFS P-value
Primary tumor
T0–2	38 (52%)	0.14	0.66
T3–4	35 (48%)
Regional lymph nodes
N0–1	12 (16%)	0.68	0.28
N2	27 (36%)
N3	35 (47%)
Primary tumor site
Lower lobe	26 (35%)	0.081	0.0051
Other sites	48 (65%)
Pathology
Adenocarcinoma	42 (57%)	0.95	0.69
Squamous cell carcinoma	26 (35%)
Other pathologies	6 (8%)