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Table 1 Baseline and other characteristics of the study patients

From: Venous thromboembolism after total joint arthroplasty: results from a Japanese multicenter cohort study

  TKA (n = 1,294) THA (n = 868)
Gender, male/female 221/1,073 128/740
Age, years   
  Mean ± SD 73.9 ± 8.0 66.7 ± 10.5
  Range 34-93 23-94
Weight, kg   
  Mean ± SD 57.8 ± 10.6 54.8 ± 11.4
Body mass index, kg/m2   
  Mean ± SD 25.4 ± 3.9 23.6 ± 4.2
   Range 14.5-44.0 14.2-56.4
History of venous thrombolism, n (%) 16 (1.2%) 5 (0.6%)
Comorbidities, n (%)   
  Hypertension 706 (54.6%) 307 (35.4%)
   Ischemic heart disease 75 (5.8%) 40 (4.6%)
   Diabetes 194 (15.0%) 69 (7.9%)
  Cerebrovascular disease 63 (4.9%) 24 (2.8%)
Operation time, minutes   
  Mean ± SD 127 ± 37.2 123.3 ± 43.0
  Range 42-400 35-332
Type of anesthesia, n (%)   
  General 366 (28.3%) 280 (32.3%)
  Epidural 56 (4.3%) 31 (3.6%)
  Spinal 337 (26.0%) 88 (10.1%)
  General + epidural 535 (41.3%) 469 (54.0%)
Primary diseases, n (%)   
  Rheumatoid arthritis 204 (15.8%) 52 (6.0%)
  Osteoarthritis 1,084 (83.8%) 751 (86.5%)
  Others 6 (0.5%) 65 (7.5%)
Use of elastic stocking, n (%) 1,095 (84.6%) 792 (91.2%)
Use of foot pump, n (%) 939 (72.6%) 669 (77.1%)
Use of tourniquet, n (%) 1,244 (96.1%) -
Use of cement, n (%) 1,208 (93.4%) 183 (21.1%)
Prophylaxis   
  Unfractionated heparin, n (%) 72 (5.6%) 32 (3.7%)
  Enoxaparin, n (%) 223 (17.2%) 148 (17.1%)
  Fondaparinux, n (%) 360 (27.8%) 261 (30.1%)
  Others, n (%) 45 (3.5%) 44 (5.1%)
  No medication, n (%) 594 (45.9%) 383 (44.1%)
Laboratory data   
  Serum albumin, g/dL   
   Mean ± SD 4.1 ± 0.4 4.1 ± 0.4
  Hemoglobin, g/dL   
   Mean ± SD 12.4 ± 1.6 12.1 ± 1.5
  Platelet count, 104/μL   
   Mean ± SD 24.5 ± 14.3 26.4 ± 11.1
  e-GFR, mL/min per 1.73 m2   
   Mean ± SD 73.4 ± 21.4 80.8 ± 20.1
  1. e-GFR, estimated glomerular filtrating ratio; SD, standard deviation; THA, total hip arthroplasty; TKA, total knee arthroplasty.