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Table 2 Demographic characteristics of postoperative venous thromboembolism (VTE)

From: Which orally administered antithrombotic agent is most effective for preventing venous thromboembolism after total knee arthroplasty? A propensity score-matching analysis

 

Postoperative VTE (−) (n = 676)

Postoperative VTE (+) (n = 123)

Total (n = 799)

RR (95% CI)

p value

Age (years)

71.2 ± 7.1

71.9 ± 5.6

  

0.229

Sex

 Male

79 (95.2)

4 (4.8)

83

3.94 (1.42–11.0)

0.005

 Female

597 (83.4)

119 (16.6)

716

Body mass index (kg/m2)

26.7 ± 3.5

27.1 ± 3.4

  

0.349

Type of surgery

 Unilateral

385 (87.9)

53 (12.1)

438

1.75 (1.19–2.58)

0.004

 Staged bilateral

291 (80.6)

70 (19.4)

361

aPrevious agents

 No

534 (85.0)

94 (15.0)

628

1.16 (0.74–1.83)

0.522

 Yes

142 (83.0)

29 (17.0)

171

  1. Values are presented as mean ± standard deviation or number (%). The statistical significance was set at p < 0.05
  2. VTE venous thromboembolism, RR relative risk, CI confidence interval
  3. aPreviously prescribed anticoagulant agents for other diseases regardless of total knee arthroplasty (TKA)