Table 1 Descriptive characteristics of all total hip replacement (THR) patients according to red blood cell transfusion within 8 days of surgery.
| Â | Transfusion n = 9,063 | No transfusion n = 19,024 | Standardized mean difference*** |
|---|---|---|---|
Age (years) | Â | Â | Â |
10-49 | 338 (3.7%) | 1363 (7.2%) | 0.18797 |
50-59 | 834 (9.2%) | 3162 (16.6%) | 0.22038 |
60-69 | 2098 (23.2%) | 6334 (33.3%) | 0.18585 |
70-79 | 3189 (35.2%) | 5957 (31.3%) | 0.11451 |
+80 | 2604 (28.7%) | 2208 (11.6%) | 0.42107 |
Sex | Â | Â | Â |
Female | 6440 (71.1%) | 10450 (54.9%) | 0.36876 |
Primary hip diagnosis | Â | Â | Â |
Primary arthrosis | 5646 (62.3%) | 15588 (81.9%) | 0.40642 |
Trauma | 2546 (28.1%) | 1628 (8.6%) | 0.48898 |
Other | 871 (9.6%) | 1808 (9.5%) | 0.02348 |
Comorbidity history (yes) | Â | Â | Â |
Myocardial infarction | 491 (5.4%) | 717 (3.8%) | 0.07073 |
Congestive heart failure | 612 (6.8%) | 600 (3.2%) | 0.17886 |
Peripheral vascular disease | 442 (4.9%) | 645 (3.4%) | 0.05825 |
Cerebrovascular disease | 990 (10.9%) | 1010 (5.3%) | 0.22239 |
Dementia | 165 (1.8%) | 106 (0.6%) | 0.11135 |
Chronic pulmonary disease | 815 (9.0%) | 1227 (6.5%) | 0.09349 |
Connective tissue disease | 679 (7.5%) | 972 (5.1%) | 0.11434 |
Peptic ulcer disease | 654 (7.2%) | 745 (3.9%) | 0.15010 |
Mild liver disease | 167 (1.8%) | 214 (1.1%) | 0.05590 |
Diabetes (type I and II) | 544 (6.0%) | 764 (4.0%) | 0.08144 |
Hemiplegia | 19 (0.2%) | 19 (0.1%) | 0.01715 |
Moderate to severe renal disease | 236 (2.6%) | 229 (1.2%) | 0.13977 |
Diabetes with end organ damage | 274 (3.0%) | 326 (1.7%) | 0.10146 |
Any tumor | 1151 (12.7%) | 1637 (8.6%) | 0.16577 |
Leukemia | 36 (0.4%) | 35 (0.2%) | 0.05114 |
Lymphoma | 69 (0.8%) | 76 (0.4%) | 0.06085 |
Moderate to severe liver disease | 63 (0.7%) | 39 (0.2%) | 0.07666 |
Metastatic solid tumor | 141 (1.6%) | 121 (0.6%) | 0.11523 |
Fixation technique | Â | Â | Â |
Cemented | 4060 (44.8%) | 6170 (32.4%) | 0.26193 |
Cementless | 2118 (23.4%) | 7486 (39.4%) | 0.37578 |
Hybrid | 2885 (31.8%) | 5368 (28.2%) | 0.09093 |
Type of anesthesia | Â | Â | Â |
Regional | 5929 (65.4%) | 14622 (76.9%) | 0.29165 |
Universal and Combined | 3134 (34.6%) | 4402 (23.1%) | 0.29165 |
Duration of surgery (minutes) | Â | Â | Â |
0-60 | 1819 (20.1%) | 7439 (39.1%) | 0.34220 |
61-120 | 6199 (68.4%) | 11097 (58.3%) | 0.10558 |
>121 | 1045 (11.5%) | 488 (2.6%) | 0.34021 |
20 hospitals performing the THR procedures* | Â | Â | |
Prophylaxis for heterotopic bone formations ** | Â | Â | |
Yes | 600 (6.6%) | 1317 (6.9%) | 0.01945 |
No | 8463 (93.4%) | 17707 (93.1%) | 0.02058 |
Year of surgery | Â | Â | Â |
1999 | 114 (1.3%) | 115 (0.6% | 0.10403 |
2000 | 731 (8.1%) | 764 (4.0%) | 0.11245 |
2001 | 623 (6.9%) | 1353 (7.1%) | 0.05878 |
2002 | 1123 (12.4%) | 1757 (9.2%) | 0.19310 |
2003 | 989 (10.9%) | 1669 (8.8% | 0.13441 |
2004 | 1103 (12.2%) | 2570 (13.5%) | 0.01450 |
2005 | 1410 (15.6%) | 3148 (16.6%) | 0.08021 |
2006 | 1579 (17.4%) | 3820 (20.1%) | 0.19120 |
2007 | 1390 (15.4%) | 3828 (20.1%) | 0.12261 |