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Table 3 Patient-characteristics

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

  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
  1. 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.