Table 6.

Multivariate analyses of risk factors for recurrence including blood vessel invasion and lymphatic vessel invasion

Variable	p	HR	95% CI
Age	0.185	1.676	0.780–3.600
Sex	0.853	0.930	0.429–2.015
PL	0.016	2.799	1.212–6.464
BVI	0.000	5.669	2.454–13.095
LVI	0.040	2.335	1.039–5.248

PL, pleural invasion; BVI, blood vessel invasion; LVI, lymphatic vessel invasion; HR, hazard ratio; CI, confidence interval.