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Table 5 Descriptive statistics for iron variables comparing the iron transfusion group versus the non-iron transfusion group. THA total hip arthroplasty

From: Efficacy and cost-effectiveness of universal pre-operative iron studies in total hip and knee 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*
  1. *Chi-square test P value