Table 1. Clinicopathological parameters in 369 locally advanced esophageal squamous cell carcinoma patients with/without supraclavicular lymph node (SCLN) metastasis receiving curative CCRT.

Characteristics	SCLN metastasis group (N = 70)	Non-SCLN metastasis group (N = 299)	P value
Age
< 60 years	54 (77%)	215 (72%)	0.38
≥ 60 years	16 (23%)	84 (28%)
Gender
Male	67 (96%)	291 (97%)	0.48
Female	3 (4%)	8 (3%)
Performance status
0–1	59 (84%)	262 (88%)	0.46
2	11 (16%)	37 (12%)
T status
1 + 2 + 3	33 (47%)	132 (44%)	0.65
4	37 (53%)	167 (56%)
N status
0 + 1 + 2	31 (44%)	262 (88%)	<0.001*
3	39 (46%)	37 (12%)
Grade
1	10 (14%)	32 (11%)	0.40
2 + 3	60 (86%)	267 (89%)
Location
Upper	35 (50%)	87 (29%)	0.001*
Middle + Lower	35 (50%)	212(71%)
Salvage operation
Yes	11 (16%)	49 (16%)	0.89
No	59 (84%)	250 (84%)
Radiotherapy dose
50–50.4 Gy	67 (96%)	276 (92%)	0.32
< 50Gy	3 (4%)	23 (8%)
Cycles of chemotherapy
1	11 (16%)	31 (10%)	0.21
2	59 (84%)	268 (90%)
Lower	3 (9%)	95 (26%)

SCLN: Supraclavicular lymph node; CCRT: concurrent chemoradiotherapy

*Statistically significant.