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Table 2 Univariate analysis of the risk factors for preoperative DVT

From: Incidence and risk factors of preoperative deep vein thrombosis in patients with intertrochanteric fractures: a retrospective study

Variables

Non-DVT (n = 195)

DVT (n = 71)

P value

Female gender (%)

105 (53.9)

54 (76.1)

0.001*

Age, years (mean ± SD)

72.7 ± 14.9

79.6 ± 8.4

< 0.001*

BMI, kg/m2 (mean ± SD)

24.9 ± 4.0

24.7 ± 4.5

0.679

Number of days between injury and surgery (mean ± SD)

6.4 ± 3.5

8.0 ± 4.5

0.002*

Number of days between injury and admission (mean ± SD)

2.7 ± 2.6

4.7 ± 4.0

< 0.001*

Number of days awaiting surgery (mean ± SD)

3.7 ± 2.4

3.3 ± 1.5

0.247

Combined cranial trauma (%)

7 (3.6)

8 (11.3)

0.016*

Blood transfusion before surgery (%)

6 (3.1)

5 (7.0)

0.151

Caprini score (mean ± SD)

7.5 ± 1.2

8.1 ± 0.9

< 0.001*

Diabetes (%)

56 (28.7)

19 (26.8)

0.754

Hypertension (%)

101 (51.8)

31 (43.7)

0.241

Coronary Heart Disease (%)

29 (14.9)

12 (16.9)

0.685

Stroke (%)

22 (11.3)

6 (8.5)

0.506

PT, s (mean ± SD)

11.5 ± 0.9

11.5 ± 0.7

0.905

INR (mean ± SD)

1.01 ± 0.08

1.01 ± 0.06

0.819

APTT, s (mean ± SD)

27.6 ± 3.0

27.1 ± 2.8

0.243

TT, s (mean ± SD)

17.0 ± 1.1

16.6 ± 1.0

0.034*

Fibrinogen, g/L (mean ± SD)

3.7 ± 1.0

3.9 ± 1.1

0.135

D-dimer, mg/L (mean ± SD)

6.93 ± 5.63

9.00 ± 6.69

0.012*

eGFR, (mean ± SD)

101.1 ± 34.9

100.5 ± 36.3

0.914

CRP, mg/L (mean ± SD)

43.9 ± 31.9

43.9 ± 31.1

0.997

Albumin, g/L (mean ± SD)

37.4 ± 3.3

35.5 ± 2.6

< 0.001*

Hb, g/L (mean ± SD)

110.1 ± 20.1

102.4 ± 17.4

0.005*

Hct, % (mean ± SD)

32.5 ± 5.7

30.6 ± 5.0

0.013*

PLT, 109/L (mean ± SD)

171.1 ± 62.2

187.1 ± 81.0

0.091

  1. DVT, deep vein thrombosis; SD, standard deviation; BMI, body mass index; PT, prothrombin time; INR, international normalized ratio; APTT, activated partial thromboplastin time; TT, thrombin time; eGFR, estimated glomerular filtration rate; CRP, C-reactive protein; Hb, hemoglobin; Hct, hematocrit; PLT, platelet count
  2. *P < 0.05 was considered statistically significant