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Table 1 Characteristics of the 113 studied patients during ICU stay

From: A composite score combining procalcitonin, C-reactive protein and temperature has a high positive predictive value for the diagnosis of intensive care-acquired infections

Characteristics of patient population NI - (88) NI + (25) p
Age (years) 55 (45–65) 55 (47–59) 0.34
Sex (male/female) 48/40 17/8 0.38
SAPS II score at admission 45 (31–55) 50 (38–57) 0.43
Admission diagnosis, n (%)    0.07
  Acute respiratory failure 26 (30) 5 (20)  
  Neurologic failure 22 (25) 5 (20)  
  Cardiovascular failure 16 (18) 3 (12)  
  Polytrauma 10 (11) 6 (24)  
  Post operative 3 (3) 5 (20)  
  Miscellaneous 11 (13) 1 (4)  
Site of infection, n (%)    
  Bacteremia   11 (44)  
  Pneumonia   9 (36)  
  Catheter related infection   2 (8)  
  Candidemia   3 (12)  
Delay of NI, days   11 (8–14)  
Number of days without antibiotics before NI   5 (3.5-5.5)  
Central venous catheter, n (%) 60 (68) 25 (100) 0.005
Duration of central venous catheter, days 11 (8–17) 22 (14–35) 0.001
MV, n (%) 58 (66) 24 (96) 0.02
Duration of MV, days 10 (5–14) 25 (15–33) 0.0007
Length of ICU stay, days 12 (7–18) 29 (22–39) < 0.0001
  1. Data are presented as n (%) and median values (lower and upper quartiles). NI: Nosocomial Infection. SAPS: Simplified Acute Physiologic Score. MV: mechanical ventilation. ICU: Intensive Care Unit.