Table 1

Baseline characteristics.

Variable

Pre-Intervention (n = 753)

Post-Intervention (n = 803)

P-value


Age, years (mean ± SD)

59.4 ± 20.8

58.2 ± 20.3

0.26

Sex, male (%)

63.5

61.9

0.54

Source

0.11

Emergency (%)

43.4

43.3

Ward (%)

30.6

29.5

Other (%)

26.0

27.2

Diagnostic category

0.04

Trauma (%)

29.6

35.3

Respiratory (%)

27.7

22.6

Neuro (%)

11.7

13.8

Gastrointestinal (%)

7.8

6.1

Cardiovascular (%)

6.9

6.0

Other (%)

16.3

16.2

Length of mechanical ventilation, days (mean ± SD)

6.5 ± 10.9

6.1 ± 8.1

NA

Ventilator-free days (mean ± SD)

16.9 ± 10.9

17.2 ± 10.7

NA

Apache II score (mean ± SD)

22.3 ± 7.9

22.3 ± 8.6

0.97

Mortality, % (95% CI)

23.5 (20.5, 26.7)

22.2 (19.3, 25.2)

0.54


APACHE, acute physiology and chronic health evaluation; NA, not applicable

Amaral et al. Critical Care 2012 16:R78   doi:10.1186/cc11335

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