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Table 2 Differences of complexity indices between patient subgroups

From: Study of multiparameter respiratory pattern complexity in surgical critically ill patients during weaning trials

Parameter

Median

95% CI

Range

p value

 

(SE)

(Lower-upper bounds)

(10-90% percentiles)

 

Sample entropy of flow

    

S

1.26 (0.035)

1.16-1.32

0.87-1.46

< 0.001

U

0.88 (0.027)

0.77-0.94

0.65-1.21

 

Sample entropy of VT

    

S

1.27 (0.075)

0.89-1.47

0.86-1.44

< 0.001

U

0.79 (0.029)

0.54-1.13

0.64-1.92

 

DFA exponent of flow

    

S

0.81 (0.034)

0.43-1.35

0.72-0.95

< 0.001

U

1.08 (0.05)

0.76-1.13

0.94-1.25

 

Largest Lyapunov exponent of flow

    

S

0.76 (0.045)

0.56-1.22

0.48-1.11

< 0.001

U

0.27 (0.014)

0.14-0.55

0.09-0.42

 
  1. Statistical significant differences of various complexity indices derived from mean inspiratory flow and tidal volume (VT) time series analysis, between weaning success (S, n = 22) and weaning failure (U, n = 10) patients. Variables are those that correspond to metrics at the end of the SBT and are presented as median with standard error (SE), along with 95% confidence intervals (CI).