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Table 1 Baseline characteristics of acutely admitted elderly patients with and without a prevalent delirium after acute admission.

From: Risk factors for delirium in acutely admitted elderly patients: a prospective cohort study

  Patients with delirium Patients without delirium
Number 36 (29%) 90 (71%)
Age (yrs.) * 82.1 (7.2) 77.8 (7.8)
   65–70 (%) 8% 17%
   70–75 (%) 14% 29%
   75–80 (%) 14% 14%
   80–85 (%) 25% 18%
   ≥ 85 (%) 39% 22%
Male (%) 50% 38%
Education (yrs.) 8.9 (2.1) 8.8 (3.2)
Comorbidity (%)   
   Mild 25% 19%
   Moderate 31% 31%
   Severe 44% 50%
Admission reason (%) *   
   Infectious disease 53% 56%
   Malignancy 6% 17%
   Gastrointestinal bleeding 3% 11%
   Water and electrolyte disturbances 19% 2%
   Other 19% 14%
MMSE: Cognitive impairment (%) * 89% 41%
IQCODE: Cognitive impairment (%) * 89% 24%
Katz ADL (%) *   
   0 0% 10%
   1–3 9% 37%
   4–6 15% 19%
   ≥ 7 77% 35%
Biochemistry   
   Urea nitrogen (mmol/L) * 15.9 (13.6) 10.6 (6.2)
   Creatinine (μmol/L) 175 (223) 137 (193)
   Glucose (mmol/L) 8.5 (5.1) 8.5 (5.3)
   Haemoglobin (mmol/L) 7.6 (1.5) 7.2 (1.6)
   Sodium (mmol/L) 134.6 (8.5) 133.9 (5.6)
   Potassium (mmol/L) 4.1 (0.8) 4.0 (0.7)
   Leucocytes (× 109/L) 11.2 (5.8) 13.5 (7.2)
   CRP (mg/L) 119.3 (113.6) 99.0 (93.5)
  1. Mean values (SD) are given for continuous variables
  2. * p-value <0.05: patients with delirium versus without prevalent delirium after acute admission.