Table 1 Comparison of background information between control and intervention groups

Age, M (SD)

33/07 (11/90)

37/10 (14/99)

Z^b = -0/91

0/362

Sex, n (%)

Male

21

20

X^2a = 0/09

0/761

Female

7

8

Diagnosis, n (%)

Abdominal trauma

5

6

_

1*

Chest trauma

9

8

Limb trauma

14

13

Spinal trauma

0

1

APACHEII, M (SD)

4/64 (3/03)

6/18 (4/07)

T = -1/6

0/117

Length of ICU stay (days), M (SD)

9/32 (10/58)

9/03 (7/56)

Z^b = -0/23

0/811

Types of mechanical ventilation, n (%)

Invasive

14/3

32/1

X^2a = 2/5

0/274

Non Invasive

21/4

14/3

None

64/3

53/6

Length of mechanical ventilation (days), M (SD)

6/09 (12/73)

4/02 (7/56)

Z^b = -0/06

0/944

Physical restraint, n (%)

Yes

3

4

_

1*

No

25

24

Benzodiazepine, n (%)

Yes

4

10

X^2a = 42/3

0/063

No

24

18