Table 1

Patient and hospital characteristics


Pre-IMC period
IMC period
P value


n = 329
n = 475


Number of ICU beds
17
16

Number of IMC beds
-
6

Gender, percentage of males
61.2%
59.6%
0.67a
Age, mean ± SD, years
57 ± 18.3
56 ± 18.0
0.20b
Age, 25%/median/75%, years
43/60/72
44/59/70

Surgical patients, number (percentage)
175 (53.2%)
277 (60.6%)
0.04a
Diagnostic category, number (percentage)


<0.01a
     Neurosurgical
41 (12.5%)
141 (30.9%)

     Respiratory
88 (26.7%)
87 (19%)

     Gastrointestinal
18 (5.5%)
14 (3.1%)

     Cardiovascular
105 (31.9%)
134 (29.3%)

     Multitrauma
36 (10.9%)
41 (9%)

     Sepsis
16 (4.9%)
20 (4.4%)

     Metabolic/Renal
17 (5.2%)
16 (3.6%)

     Haematological
2 (0.6%)
4 (0.9%)

Length of stay in the ICU, mean ± SD, days
5.8 ± 9.2
7.0 ± 2.4
0.25b
Length of stay in the ICU, 25%/median/75%, days
1/3/6
1/2/8.5

APACHE II score, mean ± SD (number)
19.5 ± 8.2 (230)
19.9 ± 7.6 (279)
0.44b
APACHE II score, 25%/median/75%
13/19/24
14/19/25

TISS-28 score on 1st day, mean ± SD
28.9 ± 10.8
30.2 ± 11.0
0.16b
TISS-28 score on 1st day, 25%/median/75%
21/28/36
22/29/37

TISS-28 ICU stay, mean ± SD
26.9 ± 9.3
28.6 ± 9.6
0.02b
TISS-28 ICU stay, 25%/median/75%
20/26/33
22/28/35

Mortality in the ICU, number (percentage)
64 (19.5%)
115 (25.2%)
0.06a
Mortality after ICU, number (percentage)
13 (4.0%)
14 (3.1%)
0.77a

aChi-square tests. bMann-Whitney tests. APACHE II, Acute Physiology and Chronic Health Evaluation II; ICU, intensive care unit; IMC, intermediate care unit; SD, standard deviation; TISS-28, Therapeutic Intervention Scoring System with a median value of 28.

Solberg et al. Critical Care 2008 12:R68   doi:10.1186/cc6903