Table S4. Baseline characteristics of stage III/N2 patients who received adjuvant RT and those who didn’t (non-RT).

Variable	RT	Non-RT	P
Age (years)			0.163
≤65	25	47
>65	3	16
Sex			0.547
Female	15	38
Male	13	25
Pathologic T stage			0.067
T1	11	37
T2	15	18
T3	2	3
T4	0	5
Histology			0.523
Adenosquamous carcinoma	1	1
Adenocarcinoma	27	62
ECOG performance score			0.711
0–1	26	57
2	2	6

RT, radiotherapy; ECOG, the Eastern Corporative Oncology Group.