Table 3. Prognostic factors for PFS and OS as determined by multivariate Cox proportional hazards regression model.

variables	PFS		P	OS		P
	HR	95% CI		HR	95% CI
Clinic stage	1.62	1.18–2.23	0.003
NLR	1.38	1.04–1.83	0.027	1.35	1.02–1.79	0.039
LDH	1.56	1.18–2.07	0.002	1.46	1.10–1.96	0.010
Surgery				0.55	0.33–0.93	0.025
Thoracic RT				0.66	0.50–0.88	0.005
PCI				0.71	0.53–0.96	0.023