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Table 1 Demographic and clinical characteristics of the patients

From: Long-term cognitive outcomes among unselected ventilated and non-ventilated ICU patients

  In-hospital cohort (n = 724) Follow-up cohort (n = 413)
Age, year
 Median 59 57
 IQR 47–73 46–72
Male sex
n (%) 374 (51.7) 206 (50.1)
Education, year
 Median 11 11
 IQR 11–14 11–14
APACHE IV score
 Median 35 32
 IQR 23–53 21–48
SOFA score at
 Enrollment   
 Median 1 1
 IQR 0–3 1–3
Mechanical ventilation
 No. of patients (%) 92 (12.3%) 51 (13.4%)
 No. of days   
 Median 4 3
 IQR 2–10 1.2–6.7
Use of sedative agent
 No. of patients (%) 88 (12.1%) 44 (10.7%)
Diagnosis at admission
n (%)   
 AMI, CHF, Arrhytmia 146 (20.2) 98 (23.7)
 Acute respiratory failurea 109 (15.1) 58 (14.0)
 Other surgical proceduresb 99 (13.7) 56 (13.6)
 Neurologic disease 93 (12.8) 53 (12.8)
 Sepsis, septic shock 77 (10.6) 37 (9.0)
 Digestive surgery 69 (9.6) 37 (9.0)
 Digestive disease 67 (9.3) 39 (9.4)
 Other diagnosis 64 (8.7) 35 (8.5)
Delirium
 No. of patients (%) 80 (11.6) 55 (13.3)
 No. of days   
 Median 4 3
 IQR 2–5 2–5
Duration at ICU stay
 Median 11 10
 IQR 6–23 5–19
  1. aAcute respiratory failure included acute respiratory distress syndrome, pneumonia, acute exacerbation of chronic pulmonary disease, asthma, pulmonary edema, and embolism
  2. bOther surgical procedures included orthopedic, vascular, and urologic surgery