Transfusion-related variables (all patients)
| Absolute (g/L, mL) | Relative (%) | |||||
|---|---|---|---|---|---|---|
| Women | Men | p Value | Women | Men | p Value | |
| Hb preoperative (g/L) | ||||||
| All | 131/16 | 143/18 | <0.0001 | 109/13.3 | 110/13.8 | 0.1424 |
| CABG | 127/17 | 141/20 | <0.0001 | 105.83/14.17 | 108.46/15.38 | <0.0001 |
| THR | 131/16 | 144/16 | <0.0001 | 109.17/13.33 | 110.77/12.31 | 0.0004 |
| TKR | 132/16 | 143/18 | <0.0001 | 110.00/13.33 | 110.00/13.85 | 0.8485 |
| Hb POD5 (g/L) | ||||||
| All | 100/15 | 105/1.8 | <0.0001 | 83.3/12.5 | 80.8/13.8 | <0.0001 |
| CABG | 104/17 | 106/1.8 | 0.2730 | 86.88/14.17 | 81.15/13.85 | <0.0001 |
| THR | 100/15 | 105/1.7 | <0.0001 | 83.33/12.50 | 80.96/13.08 | <0.0001 |
| TKR | 100/15 | 103/1.9 | <0.0001 | 83.33/12.71 | 79.23/14.62 | <0.0001 |
| Hb nadir (g/L) | ||||||
| All | 97/16 | 102/1.8 | <0.0001 | 80.8/13.3 | 78.5/13.8 | <0.0001 |
| CABG | 98/17 | 99/16 | 0.0729 | 81.67/14.17 | 76.15/12.31 | <0.0001 |
| THR | 97/15 | 105/19 | <0.0001 | 80.83/12.50 | 80.77/14.62 | 0.4955 |
| TKR | 97/16 | 102/.0 | <0.0001 | 80.83/13.33 | 78.46/15.38 | 0.0024 |
| RBC volume preoperative | ||||||
| All | 1455/336 | 2007/428 | <0.0001 | – | – | – |
| CABG | 1339/291 | 1950/415 | <0.0001 | – | – | – |
| THR | 1435/319 | 2037/435 | <0.0001 | – | – | – |
| TKR | 1494/343 | 2028/434 | <0.0001 | – | – | – |
| RBC volume POD5 | ||||||
| All | 1127/267 | 1477/352 | <0.0001 | 76.6/13.2 | 74.3/13.0 | <0.0001 |
| CABG | 1126/248 | 1468/346 | <0.0001 | 82.8 /16.0 | 75.4 /14.0 | <0.0001 |
| THR | 1110/261 | 1487/353 | <0.0001 | 76.0/12.9 | 73.4 /12.5 | <0.0001 |
| TKR | 1148/289 | 1477/366 | <0.0001 | 76.0/12.6 | 73.4 /13.4 | <0.0001 |
| RBC volume lost | ||||||
| All | 488/290 | 628/347 | <0.0001 | 32.1/21.3 | 30.7/17.2 | <0.0001 |
| CABG | 619/465 | 655/438 | 0.3945 | 46.5/36.3 | 33.1/22.9 | <0.0001 |
| THR | 479/277 | 620/311 | <0.0001 | 32.4/20.9 | 29.3/15.0 | <0.0001 |
| TKR | 471/270 | 615/296 | <0.0001 | 30.2/18.2 | 29.9/14.5 | 0.1345 |
| RBC units transfused (number yes (%)) | ||||||
| All | 1545 (44.6) | 1011 (32.9) | <0.0001 | – | – | – |
| CABG | 283 (80.9) | 554 (48.6) | <0.0001 | – | – | – |
| THR | 634 (44.5) | 277 (24.2) | <0.0001 | – | – | – |
| TKR | 628 (37.1) | 180 (23.1) | <0.0001 | – | – | – |
Bold values indicate p Values <0.05
Values are presented as median/IQR for measured values and frequencies (%) for categorical variables.
The percentages are calculated as the fraction of the total applicable population for each variable.
CABG, coronary artery bypass graft; Hb, haemoglobin; POD5, post-operative day 5; RBC, red blood cell; THR, total hip replacement; TKR, total knee replacement.