Skip to main content

Table 4 Comparison of the areas under the receiver operator characteristic curves ( P value for the two-tailed test)

From: A new integrative weaning index of discontinuation from mechanical ventilation

Index PaO2/FiO2 Cst,rs IWI P 0.1 f Vt f/Vt × P 0.1
Cst,rs 0.01       
IWI <0.0001 0.002      
P 0.1 0.38 0.09 0.00001     
f 0.29 0.12 <0.00001 0.88    
Vt 0.024 0.75 0.0006 0.15 0.2   
f/Vt × P 0.1 0.037 0.63 0.0006 0.021 0.11 0.84  
f/Vt 0.003 0.77 0.003 0.005 0.004 0.30 0.20
  1. f = respiratory rate; f/Vt ratio = frequency to tidal volume ratio; IWI = integrative weaning index; P 0.1 = airway occlusion pressure; PaO2/FiO2 ratio = ratio of arterial oxygen tension to fraction of inspired oxygen; Vt = tidal volume.