Table 2.

Patient characteristics stratified based on TRT duration (n = 197)

Variables	Short TRT		Long TRT		P valuea
	No.	%	No.	%
Age (y)
≤53	77	63.11	29	38.67	.001b
>53	45	36.89	46	61.33
Gender
Male	105	86.07	67	89.33	.660
Female	17	13.93	8	10.67
Smoking
Current/ever	89	72.95	55	73.33	1.000
Never	33	27.05	20	26.67
Comorbidity score
=0	99	81.15	63	84.00	.703
≥1	23	18.85	12	16.00
Chemotherapy regimen
EP	105	49.30	67	89.33	1.000
Others	108	50.70	8	10.67
RT fractionation
Once daily	35	28.69	36	48.00	.009b
Twice daily	87	71.31	39	52.00
Albumin
Relatively low	59	48.36	37	49.33	1.000
Relatively high	63	51.64	38

EP, etoposide‐platinum; RT, radiotherapy; TRT, thoracic radiotherapy.

^aLog‐rank test.

^bStatistically significant.