Table 2. Multivariate analysis factors for overall survival.

Factor	Hazard ratio	95% CI	p-value
PS (0-1/2-3)	2.808	1.111-7.098	0.029
Stage (LD/ED)	3.364	1.901-5.953	<0.001
NSE level (Low/High)	1.673	0.925-3.027	0.089
LDH level (Normal/Abnormal)	1.220	0.580-2.568	0.600
PD-L1 expression (Positive/Negative)	0.943	0.572-1.557	0.820
c-MET expression (Positive/Negative)	0.732	0.401-1.333	0.307