On Consistency of Cross-Approximate Entropy in Cardiovascular and Artificial Environments

Table 3

Relative error of ApEn() with respect to ApEn() in real signals.

N
	[15]	[16]	[15]	[16]
	2000	3.46 ± 0.53	4.07 ± 0.54	1.95 ± 0.33	2.33 ± 0.35
3000	3.23 ± 0.54	3.82 ± 0.56	2.30 ± 0.35	2.91 ± 0.48
4000	3.72 ± 0.65	4.40 ± 0.67	2.86 ± 0.48	3.33 ± 0.51
5000	3.75 ± 0.67	6.45 ± 1.26	2.68 ± 0.43	5.63 ± 1.29

Error is evaluated according to the guidelines from [15] and from [16]. Results are presented as mean ± SEM, averaged over 100 time series: 50 data series of Wistar and borderline hypertensive rats in baseline and in stress, repeated for and for .