Table 1.

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

	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*

N: normal subject, P: patient, J_{ch, t}: jitter, S_{ch, t}: shimmer, *: p < 0.01