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Table 1 Demographic and Operative Data

From: The relationship of the factor V Leiden mutation or the deletion-deletion polymorphism of the angiotensin converting enzyme to postoperative thromboembolic events following total joint arthroplasty

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