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Table 1 Characteristics of patient population (N = 122)

From: Association of intensive care unit delirium with sleep disturbance and functional disability after critical illness: an observational cohort study

Characteristic Mean (SD) or  %
Age in years 65.5 (15.6)
Gender 50.0% male
Race 87.7% white/Caucasian
APACHEII 18.8 (5.3)
Primary reason for ICU admission
 Acute respiratory failure/pulmonary edema 33.6%
 Pulmonary embolism 4.1%
 Sepsis/shock 28.7%
 Pneumonia 3.3%
 Acute kidney failure 2.5%
 Gastrointestinal bleed 12.3%
 DKA/HHS 2.5%
 Severe metabolic derangement 5.7%
 Alcohol withdrawal/drug overdose 2.4%
 Other 4.9%
Infection 36.1%
Respiratory distress 45.9%
Medications in ICU*  
 Opioids 56 (46%)
 Benzodiazepines 47 (39%)
 Propofol 16 (13%)
Delirium Source  
 CAM by research staff 3%
 Chart review 82%
 CAM and chart review 15%
ICU LOS in days 4.2 (3.4)
Hospital LOS in days 10.4 (8.9)
% Mechanically ventilated 15.6%
Delirium:  % of patients with delirium 36%
Delirium: Mean total days of delirium 2.9 (3.4)
  1. APACHE II Acute Physiology and Chronic Health Evaluation II, CAM Confusion Assessment Method, DKA/HHS diabetic ketoacidosis/hyperosmolar hyperglycemic syndrome, ICU intensive care unit, LOS length of stay
  2. *Opioids refers to receipt of fentanyl, morphine, or hydromorphone; benzodiazepines refers to receipt of lorazepam or midazolam