Table 1.

Average variance across data length (N) and tolerarance (r - for ApEn and SampEn) or bin number (M for DistEn) for all embedding dimension (m) to quantify the sensitivity of each entropy measure with respect to their parameters.

Complexity measure	Embedding dimension m	Young		Elderly		Healthy		Arrhythmia
		$\overline{{\sigma }_N}$	$\overline{{\sigma }_{r/M}}$	$\overline{{\sigma }_N}$	$\overline{{\sigma }_{r/M}}$	$\overline{{\sigma }_N}$	$\overline{{\sigma }_{r/M}}$	$\overline{{\sigma }_N}$	$\overline{{\sigma }_{r/M}}$
ApEn	2	3.11	5.91	1.70	5.88	1.58	4.55	2.60	5.38
	3	1.75	2.80	1.06	2.21	1.00	1.83	1.68	2.03
	4	1.24	2.27	0.73	1.33	0.74	1.12	1.04	1.53
	5	0.89	1.94	0.53	0.98	0.55	0.78	0.73	1.25
SampEn	2	0.14	27.52	0.32	24.87	3.84	15.80	0.83	23.51
	3	0.32	18.03	0.23	13.82	2.84	11.08	0.60	12.11
	4	0.31	8.51	0.33	7.57	1.62	4.38	0.47	5.09
	5	0.28	5.66	0.31	5.64	0.88	3.06	0.48	4.14
DistEn	2	0.04	0.98	0.03	0.81	0.08	0.48	0.05	0.38
	3	0.04	1.00	0.03	0.84	0.08	0.49	0.07	0.41
	4	0.04	1.02	0.03	0.86	0.09	0.50	0.09	0.42
	5	0.05	1.04	0.03	0.87	0.10	0.50	0.11	0.43

This is a quantitative summary of variations shown in Figures 4–9. $\overline{{\sigma }_N}$, Average variance measured accross data length (N); $\overline{{\sigma }_{r/M}}$, Average variance measured across tolerance (r) or bin numbers (M) (tolerance for ApEn and SampEn, bin number for DistEn). Values of $\overline{{\sigma }_N}$ and $\overline{{\sigma }_{r/M}}$ presented in this table are multiplied by 10² for removing leading zeros.