The impact of open versus closed format ICU admission practices on the outcome of high risk surgical patients: a cohort analysis

Table 3 Patient-characteristics

	Open format ICU 1996-1998 (N = 230)	Closed format ICU 2003-2005 (N = 228)	Mean difference (95% confidence interval)	P-value
Gender male	57%	52%		0.23
age	73 (12)	75 (11)	2 (-0.1 - 4.2)	0.06
APACHE II score	14 (6.1)	16 (8.6)	2.7 (1.0-4.5)	0.002
IRIS score	4.73 (0.87)	4.67 (0.87)	0.06 (-0.1 - 0.2)	0.5

Values are mean (sd) unless indicated otherwise. ICU: Intensive Care Unit; APACHE II: Acute Physiology and Chronic Health Evaluation II; sd: standard deviation; IRIS: Identification of Risk in Surgical patients.

ISSN: 1471-2482