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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.
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Critical Care

ISSN: 1364-8535