. Author manuscript; available in PMC: 2017 May 1.

Published in final edited form as: Ann Biomed Eng. 2015 Oct 13;44(5):1636–1645. doi: 10.1007/s10439-015-1479-0

Table 2.

Means and standard deviations (SD) for each entropy method for EO/EC conditions. AUC statistics are given for each method.

Method	Measure	EO mean (SD)	EC mean (SD)	AUC (1-Predictor)	AUC (2-Predictors)
ApEn	Ψ	0.20 (0.22)	0.34 (0.24)	0.691	0.674
ApEn	R	0.71 (0.40)	0.58 (0.30)	0.513	0.674

SaEn	Ψ	0.52 (0.35)	0.36 (0.24)	0.638	0.660
SaEn	R	0.62 (0.42)	0.48 (0.31)	0.501	0.660

CompMSE	Ψ Area	9.67 (2.14)	8.94 (1.92)	0.606	0.628
	R Area	6.13 (2.75)	6.27 (2.10)	0.569	0.628
	Ψ Slope	0.12 (0.04)	0.13 (0.03)	0.604	0.709
	R Slope	0.01 (0.04)	0.03 (0.04)	0.709	0.709

	x Area	7.07 (2.69)	5.95 (1.99)	0.555	0.556
	y Area	8.82 (3.06)	8.80 (2.48)	0.520	0.556
	x Slope	0.02 (0.05)	0.05 (0.04)	0.719	0.720
	y Slope	−0.01 (0.05)	0.02 (0.04)	0.702	0.720

MSE	Ψ Area	9.63 (2.16)	8.95 (1.93)	0.595	0.622
	R Area	6.12 (2.74)	6.26 (2.10)	0.570	0.622
	Ψ Slope	0.12 (0.04)	0.13 (0.03)	0.603	0.707
	R Slope	0.00 (0.04)	0.03 (0.04)	0.707	0.707

	x Area	7.06 (2.68)	6.95 (2.00)	0.555	0.556
	y Area	8.82 (3.07)	8.79 (2.48)	0.519	0.556
	x Slope	0.02 (0.05)	0.05 (0.04)	0.723	0.721
	y Slope	−0.01 (0.05)	0.02 (0.04)	0.705	0.721

RQAEn	Ψ	2.30 (0.61)	2.42 (0.53)	0.555	0.561
RQAEn	R	3.15 (1.68)	3.55 (1.32)	0.530	0.561

ShanEn	-	4.76 (1.80)	5.01 (1.51)	0.538	-

RenyEn	-	2.18 (0.55)	2.31 (0.66)	0.559	-

COP Area (cm²)	-	4.12 (3.99)	5.01 (5.65)	0.549	-

COP Vel (cm s⁻¹)	-	2.03 (0.74)	2.78 (1.30)	0.691	-

COP SD (mm)	x	0.07 (0.03)	0.08 (0.04)	0.598	0.5963
COP SD (mm)	y	0.03 (0.02)	0.04 (0.03)	0.530	0.5963