Table 2.
The effect of hemoglobin level and blood transfusions on LOS.
| Factor | Number | Mean LOS | Median LOS | p-Value |
|---|---|---|---|---|
| Preoperative Hb (g/dL) | ||||
| < 12 | 61 (12%) | 4.2 ± 1.5 | 4 [3, 4] | 0.0013* |
| 12-12.9 | 111 (22%) | 3.9 ± 0.8 | 4 [3, 4] | |
| 13-13.9 | 151 (30%) | 4.0 ± 1.3 | 4 [3, 4] | |
| ≥ 14 | 193 (37%) | 3.7 ± 1.3 | 4 [3, 4] | |
| Postoperative Hb (g/dL) | ||||
| < 12 | 261 (51%) | 4.0 ± 1.2 | 4 [3, 4] | 0.001* |
| 12-12.9 | 145 (28%) | 3.9 ± 1.5 | 4 [3, 4] | |
| 13-13.9 | 77 (15%) | 3.7 ± 1.3 | 3 [3, 4] | |
| ≥ 14 | 33 (6%) | 3.5 ± 0.9 | 3 [3, 4] | |
| Autologous blood | ||||
| Did not donate | 424 (82.2%) | 3.9 ± 1.3 | 4 [3, 4] | 0.8591** |
| Donate | 92 (17.8%) | 3.9 ± 0.9 | 4 [3, 4] | |
| Blood transfusion | ||||
| None | 413 (80.0%) | 3.8 ± 1.1 | 4 [3, 4] | 0.003* |
| Autologous only | 41 (7.9%) | 3.8 ± 0.8 | 4 [3, 4] | |
| Allogeneic only | 55 (10.7%) | 4.7 ± 2.1 | 4 [3, 5] | |
| Autologous + Allogeneic | 7 (1.4%) | 5.0 ± 1.7 | 4 [4, 6] | |
| # of Allogeneic units received | ||||
| 0 | 454 (88.0%) | 3.8 ± 1.1 | 4 [3, 4] | 0.0014* |
| 1 | 47 (9.1%) | 4.7 ± 2.2 | 4 [3, 5] | |
| 2 | 11 (2.1%) | 4.3 ± 1.0 | 4 [4, 5] | |
| 3 | 3 (0.6%) | 7.0 ± 2.7 | 8 [4, 9] | |
| 4 | 1 (0.2%) | 3 | 3 [3, 3] | |
*
Obtained from Kruskal-wallis test.
**
Obtained from Wilcoxon rank-sum test.