Table 2.
Characteristics of the 91 patients included in the validation cohort, 6 months after esophageal cancer surgery
| Characteristics | Categorization | Postoperative weight loss ≥ 15% | Postoperative weight loss < 15% |
|---|---|---|---|
| Number (%) | Number (%) | ||
| Total | 35 (100) | 56 (100) | |
| Age at operation (yr) | < 70 | 28 (80) | 35 (63) |
| ≥ 70 | 7 (20) | 21 (38) | |
| Sex | Men | 24 (69) | 45 (80) |
| Women | 11 (31) | 11 (20) | |
| ASA-class | I–II | 21 (60) | 41 (73) |
| III–IV | 13 (37) | 9 (16) | |
| Missing | 1 (3) | 6 (11) | |
| Body mass index (kg/m2) | < 25 | 4 (11) | 25 (45) |
| ≥ 25 kg/m2 | 31 (89) | 31 (55) | |
| Preoperative weight loss (%) | < 10 | 29 (83) | 36 (64) |
| ≥ 10 | 6 (17) | 20 (36) | |
| Tumor histology | Squamous cell carcinoma | 5 (14) | 4 (7) |
| Adenocarcinoma and dysplasia | 30 (86) | 52 (93) | |
| Tumor location | Lower esophagus or cardia | 35 (100) | 54 (96) |
| Upper or middle esophagus | 0 (0) | 2 (4) | |
| Tumor stagea | 0-I | 4 (11) | 8 (14) |
| II | 11 (31) | 11 (20) | |
| III | 20 (57) | 37 (66) | |
| Neoadjuvant therapy | Yes | 33 (94) | 46 (82) |
| No | 2 (6) | 10 (18) | |
| Surgery type | Transthoracic | 11 (31) | 21 (38) |
| Transhiatal | 24 (69) | 35 (63) |
aAmerican Society of Anesthesiologists