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Table 2 The clinicopathological characteristics of patients with ESCC in the two datasets

From: A three-lncRNA signature predicts overall survival and disease-free survival in patients with esophageal squamous cell carcinoma

Clinical and pathological indexes Training set Test set
Case No. 5-year OS (%) P* 5-year DFS(%) P* Case No. 5-year OS (%) P* 5-year DFS(%) P*
Specimens 77 43.4   41.2   61 50.2   41.2  
Mean age 58      58     
Age (year)    0.959   0.964    0.017   0.014
  < 58 45 41.9   41   35 63.2   62.9  
  ≥ 58 32 41.9   38.6   26 34.6   34.6  
Gender    0.978   0.464    0.995   0.995
 Male 58 40.3   43.2   48 51.6   46.2  
 Female 19 52.1   35.5   13 46.2   46.2  
Tumor location           
 upper 7 57.1 0.354 71.4 0.247 5 20.0 0.317 20.0 0.125
 middle 26 34.6   32.8   22 49.2   44.3  
 lower 44 46.9   41.4   34 5   58.7  
Histologic grade    0.093   0.121    0.298   0.222
 G1 17 47.5   47.5   8 72.9   56.3  
 G2 55 44.5   39.5   46 49.4   48.8  
 G3 5 20.0   20.0   7 28.6   28.6  
Invasive depth    0.052   0.183    0.427   0.407
 T1 5    60.0   3 66.7   50.0  
 T2 9 22.2   22.2   7 28.6   28.6  
 T3 62 42.6   41.9   51 52.4   50.2  
 T4 1 0.0     0   
Lymph node metastasis    0.002   0.007    0.115   0.120
 N-neg 42 58.5   56.2   29 61.9   57.9  
 N-pos 35 24.5   20.8   32 38.6   37.3  
pTNM-stage    0.002   0.077    0.262   0.371
 I 11 71.6   61.4   5 75.0   75.0  
 II 36 52.8   49.8   27 55.6   47.5  
 III 30 25.4   20.8   29 39.0   42.0  
 Therapies    0.354   0.522    0.560   0.815
 Only Surgery 56 36.1   34.4   38 52.5   49.3  
 Postoperative Chemotherapy 6 50.0   50.0   19 66.7   55.6  
 Postoperative Radiotherapy 9 66.7   66.7   12 33.3   33.0  
 Othersa 6 66.7   50.0   2 50.0   50.0  
  1. All patients underwent surgical treatment. OS: overall survival; DFS: disease free survival
  2. Test set: Preoperative Chemotherapy and Radiochemotherapy (1 cases), Preoperative and Postoperative Chemotherapy (1 cases)
  3. *Log-rank test of Kaplan Meier method; P < 0.05 was considered significant
  4. aTraining set: Postoperative Chemotherapy and Radiochemotherapy (5 cases), Preoperative and Postoperative Chemotherapy (1 cases)