Table 5 Descriptive statistics for iron variables comparing the iron transfusion group versus the non-iron transfusion group. THA total hip arthroplasty
Iron variable | All data (mean (SD)) N = 216 | Iron transfusion (mean (SD)) N = 33 | No iron infusion (mean (SD)) N = 183 | Independent T-test P value |
|---|---|---|---|---|
S iron (5–30 μmol/l) | 15.4 (5.2) | 13.1 (4.7) | 15.9 (5.1) | 0.0067 |
Transferrin (1.9–3.1g/l) | 2.5 (0.4) | 2.7 (0.3) | 2.4 (0.30) | <0.0001 |
TIBC (47–77 μmol/l) | 62.0 (8.9) | 68.3 (8.0) | 60.7 (8.5) | <0.0001 |
Tran satrn (20–45%) | 25.6 (9.3) | 19.8 (8.6) | 26.8 (9.0) | 0.0001 |
Ferritin (30–300 μg/l) | 181.5 (149.2) | 59.8 (54.4) | 208.5 (150.2) | <0.0001 |
Early Hb (g/dl) | 138.95 (13.64) | 130.39 (14.05) | 140.64 (12.95) | 0.0002 |
Late Hb (g/dl) | 138.30 (14.05) | 134.12 (13.23) | 139.08 (14.10) | 0.0626 |
Post-op Hb (g/dl) | 117.26 (13.44) | 111.55 (11.33) | 118.26 (13.56) | 0.0100 |
Intra-operative blood salvage rate | 53.2% | 60% | 50% | 0.2912* |