Table 1.
Patient characteristics (n = 757) and transfusion details
| All patients | Quartile 1 | Quartiles 2 to 4 | P value a | |
|---|---|---|---|---|
| Age (years) | 66 (54 to 76) | 65 (50 to 74) | 66 (54 to 76) | 0.16 |
| Male | 468 (62%) | 112(59%) | 356 (62%) | 0.40 |
| Cardiac surgery patients | 194 (26%) | 51 (26%) | 143 (25%) | 0.62 |
| Trauma patients | 50 (7%) | 6 (3%) | 44 (7%) | 0.03 |
| Sepsis patients | 56 (7%) | 15 (7%) | 41 (7%) | 0.74 |
| Received pre-ICU | ||||
| RBCs | 333 (44%) | 90 (47%) | 243 (42%) | 0.25 |
| Platelets | 130 (17%) | 33 (17%) | 97 (17%) | 0.90 |
| FFP | 168 (22%) | 48 (25%) | 120 (21%) | 0.22 |
| RBCs transfused | 2 (1 to 4) | 2 (2 to 3) | 2 (2 to 5) | <0.0001 |
| Average age of RBCs | 14 (9.5 to 21.5) | 7.5 (5.7 to 9.0) | 17.6 (12.9 to 24.0) | <0.0001 |
| Maximum age of RBCs | 18 (11 to 28) | 8 (6 to 9) | 22 (15 to 30) | <0.0001 |
| RBCs leukodepleted | 599 (79%) | 149 (78%) | 450 (79%) | 0.91 |
| Pretransfusion | ||||
| Hemoglobin (g/dl) | 7.7 (7.2 to 8.2) | 7.6 (7.1 to 8.2) | 7.7 (7.2 to 8.2) | 0.50 |
| Received platelets | 180 (24%) | 48 (25%) | 132 (23%) | 0.55 |
| Received FFP | 256 (34%) | 57 (30%) | 199 (35%) | 0.22 |
| ICU length of stay (days) | 3.9 (1.9 to 8.6) | 3.5 (1.7 to 7.1) | 4.2 (1.9 to 9.2) | 0.02 |
| Hospital mortality | 146 (19.3%) | 25 (13%) | 121 (21%) | 0.015 |
All values expressed as number (proportion) or median (interquartile range). RBC, red blood cell; FFP, fresh frozen plasma. aQuartile 1 versus Quartiles 2 to 4.