Table 1 Patients, tumor and treatment characteristics.
Variables | No. (%) |
|---|---|
Patient characteristics | |
Age | |
≤ 61 | 142 (52%) |
> 61 | 131 (48%) |
Sex | |
Male | 224 (82.1%) |
Female | 49 (17.9%) |
ECOG performance status | |
0–1 | 263 (96.3%) |
2–3 | 10 (3.7%) |
Smoking history | |
No | 116 (42.5%) |
Yes | 157 (57.5%) |
Smoking index | |
< 600 | 170 (62.3%) |
≥ 600 | 103 (37.7%) |
History of alcohol consumption | |
No | 121 (44.3%) |
Yes | 152 (55.7%) |
Esophageal fistula | |
No | 256 (93.8%) |
Yes | 17 (6.2%) |
Tumor characteristics | |
Location | |
Cervical | 6 (2.2%) |
Upper thoracic | 58 (21.3%) |
Middle thoracic | 94 (34.4%) |
Lower thoracic | 103 (37.7%) |
Synchronous | 12 (4.4%) |
Pathological type | |
Squamous | 249 (91.2%) |
Adenocarcinoma | 7 (2.6%) |
Small cell | 17 (6.2%) |
Longitudinal length | |
T stage | |
T1–T3 | 203 (74.4%) |
T4 | 66 (24.2%) |
Unknown | 4 (1.6%) |
N stage | |
N0–N1 | 123 (45.1%) |
N2–N3 | 150 (54.9%) |
Number of metastases | |
1 | 131 (48%) |
2 | 98 (35.9%) |
3 | 26 (9.5%) |
4 | 11 (4%) |
5 | 7 (2.6%) |
Number of metastatic organs | |
1 | 170 (62.3%) |
2 | 91 (33.3%) |
3 | 12 (4.4%) |
Distant lymph node | |
0–1 | 188 (68.9%) |
> 1 | 85 (31.1%) |
Liver metastasis | |
No | 244 (89.4%) |
Yes | 29 (10.6%) |
Lung metastasis | |
No | 244 (89.4%) |
Yes | 29 (10.6%) |
Bone metastasis | |
No | 258 (94.5%) |
Yes | 15 (5.5%) |
Treatment characteristics | |
Treatment protocol | |
Single chemotherapy | 94 (34.4%) |
Concurrent chemoradiotherapy | 59 (21.6%) |
Sequential chemoradiotherapy | 91 (33.3%) |
Single radiotherapy | 18 (6.6%) |
Surgery + adjuvant therapy | 11 (4%) |
Local radiotherapy for EC | |
No | 103 (37.7%) |
Yes | 170 (62.3%) |
Local treatment for metastases | |
No | 125 (45.8%) |
Partial metastases | 18 (6.6%) |
All metastases | 130 (47.6%) |
