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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.