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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).