Table 2.

Univariate analysis of disease free survival

Factors	Hazard ratio	95% CI	P‐value
Age
Over 70 versus under 70	1.14	0.46–2.75	0.78
Gender
Male versus female	0.93	0.37–2.25	0.87
Pathologic N status
pN1 versus pN0	10.37	3.16–30.31	0.0004
pN2 versus pN0	12.30	1.84–49.82	0.015
Pathologic stage
II versus I	3.45	0.98–9.67	0.054
III versus I	9.73	1.48–37.47	0.023
Operation
Segmentectomy versus lobectomy	0.67	0.16–2.01	0.51
Partial resection versus lobectomy	0.34	0.019–1.66	0.22
Adjuvant therapy
No versus yes	0.35	0.14–1.09	0.068
PODXL expression
Positive versus negative	2.53	1.04–6.74	0.042

CI, confidence interval.