Table 3.

Multivariate analysis of risk factors for recurrence.

Factors	Unfavorable	Favorable	Hazard ratio (95%CI)	p-value*)
Tumor size	≤2.0cm	>3.0 cm	2.059 (1.042–4.068)	0.038
Visceral pleural invasion	Present	Absent	0.492 (0.187–1.294)	0.151
Intratumoral vascular invasion	Present	Absent	0.715 (0.277–1.841)	0.486
Pre-operative hypoalbuminemia	Present	Absent	0.361 (0.146–0.894)	0.028
Post-operative hypoalbuminemia	Present	Absent	0.221 (0.077–0.634)	0.005

^*p<0.05 was defined as indicative of statistical significance.

95%CI: 95% confidence interval.