|
Joint, % knee
|
417 (45%)
|
485 (47%)
|
0.50
|
|
Age, years
|
69.3 (SD 10.0)
|
70.1 (SD 9.5)
|
0.053
|
|
Gender, % female
|
616 (67%)
|
708 (68%)
|
0.51
|
|
BMI, kg/m2
|
28.6 (SD 4.8)
|
28.7 (SD 4.9)
|
0.68
|
|
Smoking, %
|
128 (10%)
|
90 (13%)
|
0.047
|
|
Physical status classificationa
| | |
0.001
|
|
• % ASA 1
|
164 (18%)
|
201 (20%)
| |
|
• % ASA 2
|
631 (71%)
|
653 (64%)
|
|
• % ASA 3–4
|
97 (11%)
|
170 (17%)
|
|
Preoperative Hb, g/dl
|
13.8 (SD 1.2)
|
13.8 (SD 1.2)
|
0.30
|
|
Use of LIA, %
|
184 (20%)
|
221 (21%)
|
0.54
|
|
Use of TXA, %
|
213 (24%)
|
190 (18%)
|
0.001
|
|
Type of anesthesia, % general anesthesia
|
302 (33%)
|
295 (28%)
|
0.038
|
|
Use of blood salvage
|
275 (30%)
|
556 (54%)
|
<0.001
|
|
Use of EPO (in EPO eligible patients)
|
62 (29%)
|
132 (51%)
|
<0.001
|
|
Postoperative Hb, g/dl
|
11.2 (SD 1.4)
|
11.2 (SD 1.4)
|
0.40
|
|
Length of stay
|
4.2 (SD 2.9)
|
3.8 (SD 1.8)
|
<0.001
|
|
Allogeneic transfusion, %
|
79 (8.5%)
|
62 (6.0%)
|
0.027
|
|
Number of RBC units transfused (in transfused patients)
|
2.5 (SD 1.44)
|
2.2 (SD 0.87)
|
0.093
|
