Fig. 3From: Differences in intestinal motility during different sleep stages based on long-term bowel soundsDistribution and trend of CVs in nonlinear domain. A Distribution of \(FD\) expressed as median and quartile values. B Distribution of \(SampEn\) expressed as median and quartile values, where for ns, \(p>0.05\); *, \(p<0.05\); **, \(p<0.01\); ***, \(p<0.001\)Back to article page