Table 2.
Descriptive analyses of patient and pathologic-specific variables in multi-institutional dataset
| Variable | N (%) |
|---|---|
| Median survival | 19.7 months |
| Receipt of neoadjuvant therapy | |
| No | 1258 (89.9) |
| Yes | 136 (9.7) |
| Unknown | 5 (0.4) |
| Receipt of adjuvant therapy | |
| No | 344 (24.6) |
| Yes | 960 (68.6) |
| Unknown | 95 (6.8) |
| Grade (differentiation) | |
| Well | 113 (8.1) |
| Moderate | 815 (58.2) |
| Poor | 442 (31.6) |
| Unknown | 29 (2.1) |
| Lymph nodes harvested | |
| ≤10 | 358 (25.6) |
| >10 | 1041 (74.4) |
| Lymph node status | |
| Negative | 375 (26.8) |
| Positive | 903 (64.5) |
| Unknown | 121 (8.7) |
| Estimated blood loss (median/25%/75% IQR) | 500 (250–800) |
| Perioperative (30 day) mortality | |
| No | 1359 (97.1) |
| Yes | 40 (2.9) |
| Neck margin | |
| R0 | 1278 (91.4) |
| R1 | 121 (8.6) |
| Retroperitoneal margin | |
| R0 | 1109 (79.3) |
| R1 | 264 (18.9) |
| R2 | 26 (1.9) |