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Table 4 The expression rate of CK5/6 protein in PESC

From: The alterations of cytokeratin and vimentin protein expressions in primary esophageal spindle cell carcinoma

  Number Expression rate of CK 5/6 protein (%) χ 2 P
Positive(n = 63) Negative(n = 19)
Age
  < 60 years 26 15 (57.7) 11 (42.3) 7.83 0.005
  ≥ 60 years 56 48 (85.7) 8 (14.3)
Gender
 Male 57 43 (75.4) 14 (24.6) 0.20 0.652
 Female 25 20 (80.0) 5 (20.0)
Family history
 Positive 18 15 (83.3) 3 (16.7) 0.18 0.671
 Negative 64 48 (75.0) 16 (25.0)
Smoking
 Yes 41 30 (73.2) 11 (26.8) 0.62 0.432
 No 41 33 (80.5) 8 (19.5)
Alcohol
 Yes 36 26 (72.2) 10 (27.8) 0.77 0.382
 No 46 37 (80.4) 9 (19.7)
Tumor location
 Upper 3 2 (66.7) 1 (33.3) 2.87 0.267
 Middle 54 39 (72.2) 15 (27.8)
 Lower 25 22 (88.0) 3 (12.0)
Gross appearance
 Polypoid 69 53 (76.8) 16 (23.2) 2.08 0.350
 Ulcerative 8 5 (62.5) 3 (37.5)
 Infiltrating 5 5 (100.0) 0 (0.0)
Lymph node metastasis
 Yes 23 19 (82.6) 4 (17.4) 0.23 0.629
 No 59 44 (74.6) 15 (25.4)
TNM stage
 I 29 26 (89.7) 3 (10.3) 5.63 0.056
 II 37 24 (64.9) 13 (35.1)
 III 16 13 (81.3) 3 (18.7)
 IV 0 0 (0.0) 0 (0.0)