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Table 3 Comparisons and correlations of IPREA scores with respect to patients’ characteristics

From: Assessment of patients’ self-perceived intensive care unit discomforts: Validation of the 18-item version of the IPREA

  18 items* p-value 16 items* p-value
M (SD) / R M (SD) / R
Sex Men 21.4 (13.6) 0.18 21.5 (13.,7) 0.355
Women 22.6 (13.9)   22.5 (14.1)  
Age <=65 years 22.9 (14.1) 0.017 23.1 (14.3) 0.007
>  65 years 20.8 (13.3)   20.7 (13.4)  
Knaus score Normal 22.9 (14.3) 0.192 23.3 (14.4) 0.090
Moderate/severe 21.6 (13.6)   21.5 (13.7)  
MacCabe Non fatal disease 22.5 (14.1) 0.080 22.6 (14.2) 0.045
Fatal disease 20.9 (13.2)   20.8 (13.4)  
Type of admission Medical 23.5 (14.6) 0.001 23.4 (14.7) 0.006
Surgical 20.2 (12.6)   20.5 (12.8)  
SAPS II   0.099 0.002 0.088 0.006
Mechanical ventilation No 21.6 (14.0) 0.417 21.6 (14.1) 0.416
Yes 22.0 (13.5)   22.1 (13.7)  
Non mechanical ventilation No 21.1 (13.4) 0.032 21.3 (13.6) 0.115
Yes 23.3 (14.1)   23.0 (14.2)  
Vasopressors administration No 21.7 (13.6) 0.203 21.8 (13.7) 0.146
Yes 30.6 (20.8)   31.5 (20.8)  
Renal replacement therapy No 21.3 (13.4) 0.132 21.4 (13.4) 0.170
Yes 22.7 (14.3)   22.7 (14.4)  
ICU stay duration   0.231 0.001 0.219 0.132
  1. *scores ranging from 0 to 100; the higher the score, the higher the discomfort
  2. SAPS II Simplified Acute Physiology Score II (range from 0 to 156, with higher scores indicating more severe illness)