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Average percentage errors for each method in four types of continuously monitoring physiological signals: air flow (left), blood glucose level (middle left-skewed), RR interval (right). The percentage errors by BootSampEn in the left and middle panels are higher than 120% and are not shown in the figure. Values are given as means ± standard error. NS means p > 0.05, * means p < 0.05, ** means p < 0.01, *** means p < 0.001.
