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Table 1 Correlation coefficients (C.C.) between the selected features and measured colon transit time (CTT) and their p-values

From: Non-invasive algorithm for bowel motility estimation using a back-propagation neural network model of bowel sounds

  J1, 3 S1, 2 S3, 2 J3.3 S2, 2 S2, 1 CTT
N1 0.154 37.6 36.1 0.159 35.1 35.4 10.8
N2 0.172 34.4 34.2 0.167 35.4 35.6 26.4
N3 0.176 38.3 36.6 0.177 38.2 37.0 10.8
N4 0.173 34.7 32.4 0.166 35.1 33.8 2.4
N5 0.162 34.6 36.8 0.155 36.3 38.3 18.0
N6 0.164 34.6 34.1 0.168 35.2 35.0 12.0
N7 0.160 37.1 36.5 0.164 34.7 35.2 16.8
N8 0.161 34.5 35.0 0.164 35.7 37.5 60.0
N9 0.157 36.2 33.8 0.168 35.4 37.3 26.4
N10 0.159 36.0 36.0 0.161 34.6 38.2 25.2
N11 0.167 35.0 36.7 0.165 34.3 36.4 2.4
N12 0.163 32.3 32.3 0.161 35.8 33.1 33.0
P1 0.132 30.2 31.1 0.151 30.1 29.8 69.0
P2 0.139 32.0 27.8 0.148 32.6 31.9 86.0
P3 0.147 31.8 30.6 0.154 31.7 32.4 102.0
P4 0.149 30.9 34.5 0.156 35.0 31.9 66.0
P5 0.134 32.5 30.8 0.142 30.7 30.5 82.2
P6 0.155 29.9 30.9 0.155 30.5 30.7 68.0
C.C. -0.79* -0.76* -0.75* -0.74* -0.72* -0.68*  
  1. N: normal subject, P: patient, Jch, t: jitter, Sch, t: shimmer, *: p < 0.01