Table 1.

Mean ± Standard deviation of all descriptors with p values for NSR and Arrhythmia subjects

	SD1	SD2	CCM
NSR	0.03 ± 0.02	0.19 ± 0.04	0.05 ± 0.03
Arrhythmia	1.92 ± 5.18	2.30 ± 5.86	0.26 ± 0.08
p value (ANOVA)	7.60E-3	8.50E-3	6.28E-18

Mean ± Standard deviation of SD1, SD2 and CCM for normal sinus rhythm (NSR) and arrhythmia subjects. p value from ANOVA analysis is given in the last row. Using ANOVA, for CCM, p = 6.28 × 10^-18 is obtained whereas for SD1 and SD2, it is 7.6 × 10^-3 and 8.5 × 10^-3 respectively. In case of p < 0.001 to be considered as significant, only CCM would show the significant difference between two groups which indicates that CCM is a better descriptor of HRV signal than SD1 and SD2 when comparing arrhythmia with normal sinus rhythm subjects.