Table 1 Baseline characteristics of patients grouped by surgical approach
From: Right versus left transthoracic approach for lymph node-negative esophageal squamous cell carcinoma
Characteristic | Left transthoracic approach (n = 545) | Right transthoracic approach (n = 150) | P |
|---|---|---|---|
Sex | 0.995 | ||
Male | 386 (70.6 %) | 106 (70.7 %) | |
Female | 159 (29.4 %) | 44 (29.3 %) | |
Average age | 55.66 ± 9.85 | 56.91 ± 8.42 | 0.192 |
Smoking history | 324 (59.4 %) | 89 (59.3 %) | 0.980 |
Drinking history | 109 (20.0 %) | 28 (18.7 %) | 0.716 |
Preoperative hemoglobin | 134.33 ± 18.65 | 132.49 ± 17.38 | 0.222 |
Preoperative FEV1 | 2.42 ± 3.50 | 2.37 ± 0.70 | 0.086 |
Duration of surgery | 189.24 ± 50.41 | 270.83 ± 68.38 | <0.001 |
Blood loss during surgery | 257.79 ± 126.56 | 297.96 ± 129.00 | <0.001 |
Location of anastomosis | <0.001 | ||
Cervical | 27(5.0 %) | 134 (89.3 %) | |
Intrathoracic | 518 (95.0 %) | 16 (10.7 %) | |
Length of tumor | 4.81 ± 1.96 | 4.67 ± 1.79 | 0.288 |
Pathological stage | 0.336 | ||
Ia | 48 (8.8 %) | 11(7.3 %) | |
Ib | 258 (47.3 %) | 67 (44.7 %) | |
IIa | 239 (43.9 %) | 72 (48.0 %) | |
Location of tumor | <0.001 | ||
Upper third | 15 (2.8 %) | 63 (42.0 %) | |
Middle third | 405 (74.3 %) | 80 (53.3 %) | |
Lower third | 125 (22.9 %) | 7 (4.7 %) | |
Method of anastomosis | 0.006 | ||
Manual | 50 (9.2 %) | 124 (82.7 %) | |
Mechanical | 495 (90.8 %) | 26 (17.3 %) | |
Grade of differentiation of tumor | 0.102 | ||
High | 213 (39.1 %) | 44 (29.3 %) | |
Middle | 219 (40.1 %) | 74 (49.3 %) | |
Low | 113 (20.7 %) | 32 (21.3 %) | |
Number of resected LNsa | 9.18 ± 5.48 | 9.61 ± 8.02 | 0.171 |
Postoperative complications | 73 (13.4 %) | 40 (26.7 %) | <0.001 |