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Table 2 Univariate analysis of the risk factors for DVT in TJA

From: Perioperative allogenic blood transfusion increases the incidence of postoperative deep vein thrombosis in total knee and hip arthroplasty

Variable

Non-DVT (n = 658)

DVT (n = 57)

P value

Female gender (%)

460 (69.9)

47 (82.5)

0.045*

Age, years (mean ± SD)

64.7 ± 12.8

70.6 ± 8.8

< 0.001*

BMI, kg/m2 (mean ± SD)

24.6 ± 4.2

25.9 ± 4.4

0.026*

Diabetes (%)

110 (16.7)

6 (10.5)

0.224

Hypertension (%)

291 (44.2)

31 (54.4)

0.139

Malignance (%)

29 (4.4)

1 (1.8)

0.338

Cardiovascular disease (%)

77 (11.7)

7 (12.3)

0.896

Stroke (%)

84 (12.8)

11 (19.3)

0.163

COPD (%)

10 (1.5)

1 (1.8)

0.890

Venous disease (%)

23 (3.5)

1 (1.8)

0.484

Previous surgery (%)

18 (2.7)

0 (0)

0.206

Preoperative aspirin (%)

92 (14.0)

7 (12.3)

0.721

Preoperative steroid (%)

27 (4.1)

0 (0)

0.119

Smoking (%)

86 (13.1)

5 (8.8)

0.350

Diagnosis

0.001*

TKA (%)

277 (42.1)

42 (73.7)

< 0.001*

Operation time, min (mean ± SD)

109.9 ± 29.3

107.7 ± 24.2

0.585

Intraoperative blood loss, ml (mean ± SD)

262.9 ± 213.5

211.8 ± 136.2

0.076

Chemical thromboprophylaxis

0.185

Transfusion (%)

77 (11.7)

12 (21.1)

0.040*

  1. *P < 0.05 was considered statistically significant
  2. aDVT deep vein thrombosis, TJA total joint arthroplasty, SD standard deviation, BMI body mass index, COPD chronic obstructive pulmonary disease, TKA total knee arthroplasty