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Table 3 Outcomes of patients with early mobility levels 4–7, 1–3, and 0

From: Association of early mobility with the incidence of deep-vein thrombosis and mortality among critically ill patients: a post hoc analysis of PREVENT trial

Outcome

Early mobility 4–7

N = 85

Early mobility 1–3

N = 356

Early mobility 0

N = 1267

Mobility 4–7 versus 0

Mobility 1–3 versus 0

Hazard ratio (95% CI)

p value

Hazard ratio (95% CI)

p value

Primary outcomes

Incident proximal lower-limb deep-vein thrombosis—no. (%)

1/85 (1.2)

7/348 (2.0)

50/1230 (4.1)

1.19 (0.16, 8.90)

0.87

0.91 (0.39, 2.12)

0.83

90-day mortality—no. (%)

8/85 (9.4)

37/356 (10.4)

380/1266 (30.0)

0.35 (0.17, 0.70)

0.003

0.39 (0.27, 0.55)

< 0.0001

Secondary outcomes

Prevalent proximal lower-limb deep-vein thrombosis—no. (%)

0/85 (0)

8/356 (2.2)

37/1267 (2.9)

–

–

1.17 (0.53, 2.61)

0.69

Pulmonary embolism—no. (%)

1/85 (1.2)

0/356 (0)

14/1267 (1.1)

1.67 (0.21, 13.57)

0.63

–

0.99

ICU mortality—no. (%)

2/85 (2.4)

18/ 356(5.1)

236/1266 (18.6)

0.53 (0.13, 2.19)

0.38

0.59 (0.36, 0.97)

0.037

28-day mortality—no. (%)

5/85 (5.9)

26/ 356(7.3)

231/1266 (18.2)

0.37 (0.15, 0.90)

0.028

0.48 (0.31, 0.73)

0.0006

Hospital mortality—no. (%)

8/85 (9.4)

32/356 (9.0)

390/1266 (30.8)

0.70 (0.34, 1.42)

0.32

0.49 (0.34, 0.70)

0.0001

    

Beta estimate* (95% CI)

 

Beta estimate* (95% CI)

 

Duration of mechanical ventilation—median (IQR)—days

0 (0, 3)

0 (0, 5)

5 (1, 11)

− 0.90 (− 1.24, − 0.57)

< 0.0001

− 0.42 (− 0.59, − 0.25)

< 0.0001

Mechanical ventilation-free days—median (IQR)

28 (25, 28)

28 (22, 28)

21 (2, 26)

0.27 (0.01, 0.52)

0.04

0.19 (0.05, 0.33)

0.009

Duration of vasopressor use—median (IQR)—days

0 (0, 0)

0 (0, 0)

1 (0, 3)

− 1.08 (− 1.51, − 0.64)

< 0.0001

− 0.60 (− 0.81, − 0.39)

< 0.0001

Vasopressor-free days—median IQR)

28 (27, 28)

28 (27, 28)

27 (21, 28)

0.15 (− 0.06, 0.37)

0.17

0.10 (− 0.02, 0.22)

0.09

ICU length of stay—median (IQR)—days

4 (3, 7)

6 (4, 9)

9 (5, 18)

− 0.78 (− 1.00, − 0.55)

< 0.0001

− 0.37 (− 0.49, − 0.25)

< 0.0001

ICU-free days, median (IQR)

24 (21, 25)

22 (18, 24)

16 (0, 22)

0.40 (0.10, 0.71)

0.01

0.27 (0.10, 0.44)

0.002

Hospital length of stay—median (IQR)—days

10 (7, 18)

13 (8, 23)

22 (12, 46)

− 0.66 (− 0.90, − 0.42)

< 0.0001

− 0.33 (− 0.46, − 0.20)

< 0.0001

  1. CI, confidence interval; ICU, intensive care unit; IQR, interquartile range
  2. *Cox regression analysis (for categorical outcomes) and generalized linear mixed model (for continuous outcomes) were used with adjustment for the treatment group, type of heparin, femoral central venous catheters, mechanical ventilation, vasopressor, APACHE II score, and body mass index.