Table 1. Baseline characteristics of patients.

Characteristics	Classify	N=405
Age, median year [range]	–	71 [37–88]
Gender	Male/Female	340 (83.9)/65 (16.1)
ECOG performance status, (n, %)	0/1/2/3	94 (46.8)/80 (39.8)/23 (11.4)/4 (1.9)
Histology, (n, %)	Adenocarcinoma	157 (38.8)
	Squamous cell carcinoma	132 (32.6)
	Small cell carcinoma	94 (23.2)
	The others	22 (5.4)
Stage, (n, %)	Stage I NSCLC	31 (7.7)
	Stage II NSCLC	38 (9.4)
	Stage III NSCLC	95 (23.5)
	Stage IV NSCLC	158 (39.0)
	Limited stage SCLC	39 (9.6)
	Extensive stage SCLC	44 (10.8)

ECOG, Eastern Cooperative Oncology Group; NSCLC, non-small cell lung cancer; SCLC, small cell lung cancer.