Table 1 Demographic and Operative Data
| Â | Study Group | Control Group | P Value |
|---|---|---|---|
| Â | N = 38 | N = 241 | Â |
Mean Age (years) | 67 | 63 | 0.11 |
Female Sex | 33 (87%) | 171 (71%) | 0.07 |
Thromboembolic Prophylaxis | Â | Â | 0.79 |
Enoxaparin Sodium | 37 (97%) | 228 (95%) | Â |
Warfarin | 1(3%) | 13 (6%) | Â |
History of Prior Thromboembolism | 5(13%) | 3 (1%) | <0.001 |
Family History of Thromboembolism | 3 (8%) | 5 (2%) | <0.001 |
Percent Ideal Body Weight | 139% | 147% | 0.23 |
History of Smoking | 3 (8%) | 20 (7%) | 0.77 |
Procedure | Â | Â | 0.21 |
Primary Total Hip Arthroplasty | 10(26%) | 94 (39%) | Â |
Primary Total Knee Arthroplasty | 25 (66%) | 113 (47%) | Â |
Revision Total Hip Arthroplasty | 1 (3%) | 20 (8%) | Â |
Revision Total Knee Arthroplasty | 2 (5%) | 14 (6%) | Â |
Preoperative Diagnosis: Hips | Â | Â | 0.71 |
Osteoarthritis | 6 (55%) | 75 (66%) | Â |
Rheumatoid Arthritis | 1 (9%) | 4 (4%) | Â |
Failed Implant | 1 (9%) | 20 (18%) | Â |
Other | 3 (27%) | 15 (12%) | Â |
Preoperative Diagnosis: Knees | Â | Â | 0.8 |
Osteoarthritis | 22 (81%) | 101 (79%) | Â |
Rheumatoid Arthritis | 2 (7%) | 7 (6%) | Â |
Failed Implant | 1 (4%) | 14 (11%) | Â |
Other | 2 (8%) | 5 (4%) | Â |
Estimated Blood Loss (milliliters) | 323 | 425 | 0.21 |
OperativeTime (minutes) | 128 | 145 | 0.24 |
Anesthetic | Â | Â | 0.09 |
Neuraxial | 30 (78%) | 142 (59%) | Â |
General | 8 (22%) | 99 (41%) | Â |