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Table 1 Demographic, anamnestic characteristics and intensive care unit data of the two groups of patients

From: Informed consent for research obtained during the intensive care unit stay

Characteristic Complete recall Incomplete recall p
n 14 30  
Demographic and educational data    
   Age, years (mean ± SD) 54 ± 22 54 ± 21 > 0.99b
   Male/female, n 9/5 19/11 0.95c
   Educational status    
Up to junior high school, n (percentage) 6 (43) 11(37) 0.89d
Intermediate (college), n (percentage) 6 (43) 16 (53)  
Academic level or more, n (percentage) 1 (7) 1 (3)  
Not available, n (percentage) 1 (7) 2 (7)  
   Daily alcohol intake, n (percentage) 1 (7) 8 (27) 0.23c
ICU and hospital data    
   Admission diagnosis, n (percentage)    0.77c
Abdominal surgery, n (percentage) 7 (50) 10 (33)  
Cardiovascular surgery, n (percentage) 3 (21.5) 8 (27)  
Trauma, n (percentage) 3 (21.5) 9 (30)  
Other, n (percentage) 1 (7) 3 (10)  
   Emergency admission/elective admission, n 7/7 16/14 > 0.99c
   Admission SAPS II (mean ± SD) 16 ± 10 20 ± 9 0.24b
   Length of mechanical ventilationa, hours (median (range)) 0 (0–15) 0 (0–64) 0.47e
   Length of ICU stay, days (median (range)) 3 (2–9) 4 (2–25) 0.43e
  1. ICU, intensive care unit; SAPS II, Simplified Acute Physiology Score second version. In the complete recall group, patients able to mention their clinical trial participation and the two clinical trial components; in the incomplete recall group, patients were unable to mention their clinical trial participation or one of the clinical trial components. aNone of the patients were intubated at the time of the informed consent procedure; bStudent's t test; cFisher's exact test; dχ2 test; eMann–Whitney U test.