Table 1.
Patient clinical characteristics
| MISE group (n = 73) | OSE group (n = 101) | χ2 | P‐value | |
|---|---|---|---|---|
| Sex | 0.121 | 0.728 | ||
| Male | 51 (69.9%) | 73 (72.3%) | ||
| Female | 22 (30.1%) | 28 (27.7%) | ||
| Age | 0.452 | 0.501 | ||
| ≤60 years | 16 (21.9%) | 18 (17.8%) | ||
| >60 years | 57 (78.1%) | 83 (82.2%) | ||
| ASA grade | 0.440 | 0.803 | ||
| I | 30 (41.1%) | 39 (38.6%) | ||
| II | 34 (46.6%) | 46 (45.5%) | ||
| III | 9 (12.3%) | 16 (15.8%) | ||
| Preoperative T stage | 1.458 | 0.482 | ||
| T1 | 12 (16.4%) | 20 (19.8%) | ||
| T2 | 33 (45.2%) | 51 (50.5%) | ||
| T3 | 28 (38.4%) | 30 (29.7%) | ||
| Preoperative N stage | 3.265 | 0.071 | ||
| N0 | 39 (53.4%) | 40 (39.6%) | ||
| N1 | 34 (46.6%) | 61 (60.4%) | ||
| Comorbidity | ||||
| Hypertension | 9 (12.3%) | 15 (14.9%) | 0.227 | 0.634 |
| Diabetes mellitus | 8 (11.0%) | 13 (12.9%) | 0.146 | 0.702 |
| COPD | 8 (11.0%) | 9 (8.9%) | 0.202 | 0.653 |
| Arrhythmia | 6 (8.2%) | 12 (11.9%) | 0.613 | 0.414 |
| Other | 3 (4.1%) | 5 (5.0%) | 1.000 | 0.549 |
ASA, American Society of Anesthesiologists; COPD, chronic obstructive pulmonary disease; Other, brain and/or peripheral vascular lesions; MIILE, minimally invasive Ivor Lewis esophagectomy; OILE, open Ivor Lewis esophagectomy.