1.
Patients' clinicopathological characteristics
| Characteristics | n (%) | P | |
| TT group (N=109) | TA group (N=199) | ||
| TT, transthoracic; TA, transabdominal; BMI, body mass index; #, expressed as median (P25, P75); *, calculated by Chi-Square test; **, calculated by Mann-Whitney U test. | |||
| Gender | 0.384* | ||
| Female | 17 (15.6) | 39 (19.6) | |
| Male | 92 (84.4) | 160 (80.4) | |
| Age (year) | |||
| <70 | 87 (79.8) | 169 (84.9) | 0.252* |
| ≥70 | 22 (20.2) | 30 (15.1) | |
| BMI (kg/m2)# | 21.6 (20.3, 23.0) | 21.3 (20.3, 22.7) | 0.705** |
| Macroscopic type | 0.476* | ||
| 0-2 | 84 (77.1) | 146 (73.4) | |
| 3-4 | 25 (22.9) | 53 (26.6) | |
| Siewert type | 0.034* | ||
| II | 69 (63.3) | 101 (50.8) | |
| III | 40 (36.7) | 98 (49.2) | |
| Tumor size (cm) | 0.259** | ||
| 0-5.0 | 8 (7.3) | 18 (9.0) | |
| 5.1-8.0 | 54 (49.5) | 108 (54.3) | |
| >8 | 47 (43.1) | 73 (36.7) | |
| Histological grade | 0.353* | ||
| Well & Moderate | 31 (28.4) | 47 (23.6) | |
| Poor & Undifferentiated | 78 (71.6) | 152 (76.4) | |
| T stage | 0.054** | ||
| T1 | 4 (3.7) | 12 (6.0) | |
| T2 | 7 (6.4) | 26 (13.1) | |
| T3 | 2 (1.8) | 3 (1.5) | |
| T4 | 96 (88.1) | 158 (79.4) | |
| N stage | 0.144** | ||
| N0 | 37 (33.9) | 50 (25.1) | |
| N1 | 22 (20.2) | 51 (25.6) | |
| N2 | 28 (25.7) | 43 (21.6) | |
| N3 | 21 (19.3) | 55 (27.6) | |
| TNM stage | 0.614** | ||
| Ia | 3 (2.8) | 11 (5.5) | |
| Ib | 5 (4.6) | 12 (6.0) | |
| IIa | 2 (1.8) | 11 (5.5) | |
| IIb | 29 (26.6) | 31 (15.6) | |
| IIIa | 20 (18.3) | 42 (21.1) | |
| IIIb | 28 (25.7) | 39 (19.6) | |
| IIIc | 22 (20.2) | 53 (26.6) | |