Table 1

Description of the included population


n = 172 patients
Cardiac surgery 23.3%
Non-cardiac surgery 37.2%
Internal medicine 40.5%
P value of difference

Age in years, mean (SD)
60 (14.9)
67 (10.2)
58 (14.4)
58 (16.4)
0.002a
Male gender
n = 102
28.4%
39.2%
32.4%
0.04b
Female gender
n = 70
15.7%
34.3%
50.0%

APACHE II score, mean (SD)
20.6 (9.0)
-
20.1 (8.0)
21.1 (10.0)
0.65a
TISS 28 score, mean (SD)
28.6 (5.4)
32.7 (4.7)
28.4 (4.5)
26.5 (5.4)
<0.001a
Length of stay in days, mean (SD)
7.0 (8.9)
5.7 (8.5)
7.3 (10.2)
7.4 (7.9)
0.59a

aP value of difference calculated with one-way analysis of variance. bP value of difference calculated with the chi-square test. APACHE, Acute Physiology And Chronic Health Evaluation; SD, standard deviation; TISS 28, Simplified Therapeutic Intervention Scoring System 28.

Van Rompaey et al. Critical Care 2008 12:R16   doi:10.1186/cc6790