Table 2: Correlation between patients characteristics and Siewert classification.

Siewert
1
Siewert
2 + 3
(spearman correlation)

Cancer center, (%)
 11 (16.7)5 (83.3)0.9
 213 (24.1)41 (75.9)
 30 (0)1 (100)
 41 (25)3 (75)
Karnofsky index, (%)
 80–10013 (25)39 (75)0.5
 <801 (14.3)6 (85.7)
Sex, (%)
 Women06 (100)0.2
 Men15 (25.4)44 (74.6)
Age, (%)
 ≤62 years6 (17.6)28 (82.4)0.2
 >62 years9 (29)22 (71)
Histologic differentiation, (%)
 Well differentiated3 (30)7 (70)0.3
 Intermediate4 (44.4)5 (55.6)
 Undifferentiated3 (17.6)14 (82.4)
UST, (%)
 UST 1-24 (57.1)3 (42.9)0.06
 UST 3-411 (19.3)46 (80.7)
USN, (%)
 USN 01 (11.1)8 (88.9)0.3
 USN 114 (25.5)41 (74.5)
Tumoral length, (%)
 <50 mm8 (32)17 (68)0.3
 ≥50 mm7 (23.3)23 (76.7)
ypT, (%)
 pT 0–212 (30)28 (70)0.2
 pT 3-43 (16.7)15 (83.3)
ypN, (%)
 pN011 (34.4)21 (65.6)0.07
 pN ≥ 14 (14.3)24 (85.7)