Skip to main content

Table 2 Baseline Characteristics

From: Risk factors for delirium in intensive care patients: a prospective cohort study

   Total population Community hospital Private hospital University hospital P value
N   523 210 123 190  
age in years mean (range) 64 (19 to 90) 65 (19 to 90) 67 (26 to 87) 60 (20 to 90) <0.001
gender male 59% 61% 54% 62% 0.34
admission surgery 49% 26% 73% 59% <0.001
internal medicine 51% 74% 27% 41%   
length of stay in days mean (range) 8 (1 to 68) 11 (2 to 68) 7 (2 to 43) 8 (1 to 54) 0.01
length of stay before inclusion in days mean (range) 3.6 (1 to 63) 3.9 (1 to 63) 3.5(1 to 34) 3.2 (1 to 47) 0.62
NEECHAM delirium 29.6% 38% 29% 21% <0.001
early to mild confused 25.8% 23% 33% 24%   
at risk 19.7% 10% 21% 30%   
normal 24.9% 29% 17% 26%   
APACHE II mean (range) -------- 15 (19 to 23) -------- 19 (7 to 47) 0.04
SAPS II mean (range) -------- 31 (4 to 73) -------- --------  
TISS 28 mean (range) -------- 34 (19 to 48) -------- 32 (17 to 49) 0.19
capacity of the intensive care units    25 beds 24 beds 34 beds  
  1. P value for difference between groups was calculated with the independent samples t-test for continuous data and Chi squared for categorical data.
  2. APACHE = Acute Physiology And Chronic Health Evaluation; NEECHAM = Neelon and Champagne Confusion Scale; SAPS = Simplified Acute Physiology Score; TISS 28 = The Therapeutic Intervention Scoring System-28.