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Table 3 Distribution of wavelet features in the three groups of patients

From: Temperature variability analysis using wavelets and multiscale entropy in patients with systemic inflammatory response syndrome, sepsis, and septic shock

Wavelet Group 1 Group 2 Group 3 1 vs 2 1 vs 3 2 vs 3
Features (SIRS) n= 5 (sepsis)
n= 10
(septic shock) n= 7 P P P
sign_m , raw data with mean value subtracted
WEn(s4) 0.226 (0.19-0.31) 0.159 (0.12-0.21) 0.105 (0.08-0.15)   0.047  
WEn(s5) 0.284 (0.23-0.35) 0.195 (0.12-0.23) 0.144 (0.09-0.16)   0.047  
WEn(s8) 0.485 (0.45-0.53) 0.479 (0.40-0.50) 0.391 (0.36-0.42)   0.010 0.033
sign_mdetr , raw data with mean value subtracted and mean trend removed
CWTentro 0.040 (0.03-0.05) 0.018 (0.01-0.02) 0.012 (0.011-0.014) 0.04 0.0480  
CWTentro3 0.035 (0.03-0.04) 0.014 (0.009-0.019) 0.009 (0.007-0.011)   0.0480  
CWTentro4 0.029 (0.02-0.03) 0.010 (0.006-0.011) 0.007 (0.006-0.011)   0.0480  
WEn(s4) 0.228 (0.19-0.31) 0.159 (0.12-0.21) 0.105 (0.08-0.15)   0.0480  
WEn(s5) 0.284 (0.23-0.35) 0.195 (0.12-0.23) 0.144 (0.09-0.16)   0.0480  
WEn(s6) 0.389 (0.33-0.41) 0.232 (0.18-0.26) 0.197 (0.18-0.21)   0.0303  
WEn(s8) 0.494 (0.45-0.53) 0.476 (0.39-0.51) 0.383 (0.35-0.42)   0.0101 0.0330
sumEn 4.599 (3.97-5.96) 6.016 (4.62-11.43) 3.683 (2.37-4.60)    0.0136
SampEn 0.007 (0.005-0.009) 0.008 (0.006-0.015) 0.005 (0.004-0.006)    0.0431
  1. The table demonstrates the statistically significant differences of features (P refers to rank-sum P value), reflecting temperature complexity within different scales and frequency bands, between the three groups of patients. Data are presented as median with intraquartile range (25th to 75th percentiles). CWTentro, entropy derived after continuous wavelet transformation of the whole signal; Wen, wavelet entropy; sumEn, multiscale entropy; SampEn, sample entropy; s, scale.