Peri-operative complications within 28 days of surgery
| No transfusion (n=289) | Transfusion (n=323) | P value* | |
| Post-operative death (<28 days) | 0 | 0 | |
| Hemorrhage grade† | <0.001 | ||
| 1 | 3 (1%) | 8 (3%) | |
| 2 | 7 (3%) | 35 (11%) | |
| 3 | 1 (0.4%) | 27 (9%) | |
| 4 | 2 (1%) | 5 (2%) | |
| Cardiovascular: venous grade‡ | 0.08 | ||
| 1 | 0 (0%) | 1 (0.3%) | |
| 2 | 0 (0%) | 0 (0%) | |
| 3 | 0 (0%) | 5 (2%) | |
| 4 | 1 (0.4%) | 2 (1%) | |
| Cardiovascular: dysrhythmias grade§ | 0.20 | ||
| 1 | 2 (1%) | 6 (2%) | |
| 2 | 1 (0.4%) | 2 (1%) | |
| 3 | 1 (0.4%) | 6 (2%) | |
| 4 | 0 (0%) | 3 (1%) | |
| Cardiovascular: hypotension grade¶ | <0.006 | ||
| 1 | 6 (2%) | 13 (4%) | |
| 2 | 2 (1%) | 9 (3%) | |
| 3 | 3 (1%) | 12 (4%) | |
| 4 | 0 (0%) | 5 (2%) | |
| Infection** | <0.001 | ||
| 1 | 10 (4%) | 14 (5%) | |
| 2 | 21 (9%) | 69 (22%) | |
| 3 | 4 (2%) | 18 (5%) | |
| 4 | 0 (0%) | 7 (2%) |
*Fisher’s exact tests were used to compare grade 3 and 4 adverse events.
†Missing data for 40 no transfusion patients and 12 transfusion patients.
‡Missing data for 41 transfusion patient and 11 transfusion patients.
§Missing data for 41 transfusion patient and 11 transfusion patients.
¶Missing data for 41 transfusion patient and 16 transfusion patients.
**Missing data for 41 transfusion patient and 11 transfusion patients.