TABLE IV.

Mean±STD Group Statistics of Statistical Indexes Computed From Second Experimental Dataset.

Statistical Index	CHF (n = 12)	Healthy (n = 16)	P-value
R-R (ms)	701±133	893±130	0.001
μHR (bpm)	88.1±16.4	68.4±9.8	0.001
σHR (bpm)	1.80±0.64	4.06±1.07	<1e-5
ρ (0.01–0.15 Hz)	0.961±0.025	0.919±0.035	0.001
Ratio (0.01–0.15 Hz)	0.998±0.003	0.937±0.071	<1e-4
R-R⇒ α-exponent	0.992±0.176	0.918±0.090	0.536
μRR ⇒ α-exponent	1.242±0.057	1.168±0.058	0.033
μRR ⇒ α1 exponent	1.251±0.015	1.293±0.021	0.042
μRR ⇒ α2 exponent	1.195±0.019	1.112±0.021	<1e-3
R-R⇒ ApEn(1,0.25)	1.364±0.404	1.185±0.242	0.283
R-R⇒ ApEn(2,0.25)	1.021±0.176	0.927±0.142	0.132
R-R⇒ ApEn(1,0.15)	1.570±0.346	1.572±0.227	0.863
R-R⇒ ApEn(2,0.15)	1.020±0.151	0.989±0.075	0.537
μRR ⇒ ApEn(1,0.15)	0.205±0.087	0.358±0.077	<1e-3
μRR ⇒ ApEn(2,0.15)	0.206±0.085	0.353±0.073	<1e-3
μRR ⇒ ApEn(1,0.1)	0.308±0.091	0.433±0.066	0.005
μRR ⇒ ApEn(2,0.1)	0.308±0.087	0.423±0.062	0.005

P-values are obtained from the rank-sum test between the CHF and healthy subject groups.