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Table 1 Clinical characteristics of patients

From: Adjuvant chemotherapy does not benefit patients with esophageal squamous cell carcinoma treated with definitive chemoradiotherapy

Characteristics CRT alone CRT-AC X 2 p
Gender    4.904 0.027
 Male 72 77   
 Female 26 12   
Median age (y, range) 59 (40–70) 58 (43–70) 0.082 0.265
ECOG scoring    4.342 0.116
 0 20 26   
 1 76 63   
 2 2 0   
Tumor location    0.174 0.982
 Cervical 12 12   
 Upper 40 34   
 Middle 38 36   
 Lower 8 7   
Clinical T stage    0,423 0.809
 T2 11 12   
 T3 46 38   
 T4 41 39   
Clinical N stage    3.761 0.153
 N0 18 21   
 N1 70 65   
 N2 10 3   
Clinical M stage    0 0.997
 M0 76 69   
 M1 22 20   
Clinical stage    2.502 0.475
 II 17 20   
 III 29 18   
 IVA 30 31   
 IVB 22 20   
Dose (Gy, range)
 GTV 61.5 (50–66) 61.5 (50–66) 0.023 0.755
 CTV 50 (45–54) 50 (45–50.4) 0.081 0.282
Cycles of CC    8.294 0.016
 1 34 19   
 2 62 61   
 3 2 9   
Regimen of CC    0.296 0.586
 PF 16 12   
 TP 82 77   
  1. CC concurrent chemotherapy; CRT-AC chemoradiotherapy followed with adjuvant chemotherapy; CRT concurrent chemoradiotherapy; ECOG Eastern Cooperative Oncology Group scoring; GTV gross tumor volume; CTV clinical target volume; PF platinum plus fluorouracil; TP platinum plus taxane; M1 supraclavicular lymph node metastasis