Table 4 Univariate analysis of the risk factors for transfusion in THA
From: The incidence and risk factors for allogenic blood transfusion in total knee and hip arthroplasty
Variable | Non-transfusion (n = 824) | Transfusion (n = 169) | P value |
|---|---|---|---|
Female gender (%) | 491 (59.6) | 132 (78.1) | < 0.001* |
Age, years (mean ± SD) | 63.7 (14.1) | 61.9 (15.2) | 0.142 |
BMI, kg/m2 (mean ± SD) | 23.4 (3.7) | 23.6 (3.9) | 0.518 |
Diabetes (%) | 78 (9.5) | 17 (10.1) | 0.811 |
Hypertension (%) | 250 (30.3) | 59 (34.9) | 0.242 |
Malignance (%) | 22 (2.7) | 3 (1.8) | 0.499 |
Smoking (%) | 107 (13.0) | 21 (12.4) | 0.843 |
Diagnosis | 0.019* | ||
OA (%) | 119 (14.4) | 33 (19.5) | |
RA (%) | 8 (1.0) | 6 (3.6) | |
Femoral neck fracture (%) | 346 (42.0) | 55 (32.5) | |
ONFH (%) | 216 (26.2) | 39 (23.1) | |
DDH (%) | 83 (10.1) | 23 (13.6) | |
AS (%) | 44 (5.3) | 10 (5.9) | |
Previous septic arthritis (%) | 8 (1.0) | 3 (1.8) | |
PT, s (mean ± SD) | 11.6 (1.0) | 11.7 (1.1) | 0.177 |
INR (mean ± SD) | 1.02 (0.09) | 1.03 (0.11) | 0.146 |
APTT, s (mean ± SD) | 27.4 (4.9) | 27.5 (4.1) | 0.698 |
Preoperative Hb level, g/L (mean ± SD) | 130.1 (15.1) | 119.1 (14.4) | < 0.001* |
PLT, 109/L (mean ± SD) | 197.8 (62.5) | 193.0 (63.0) | 0.361 |
Operation time, min (mean ± SD) | 99.6 (28.0) | 117.9 (36.4) | < 0.001* |
Intraoperative blood loss, mL (mean ± SD) | 314.6 (163.5) | 456.0 (183.3) | < 0.001* |