. 2019 Jul 9;10:841. doi: 10.3389/fphys.2019.00841

Table 8.

Mean value, 95% confidence interval and p-value of the HRV and BPV standard indices and the dual sequence method across all comparisons.

Index	IDC_HR (N =14)	IDC_LR (N = 77)	CON (N = 49)	p-value	p-value	p-value	p-value
				IDC_HR vs. IDC_LR	IDC vs. CON	IDC_HR vs. CON	IDC_LR vs. CON
bslope	5.36 [3.49; 7.22]	7.81 [6.8; 8.75]	10.29 [9.09; 11.49]	n.s.	^**	^**	^*
tslope	5.51 [3.75; 7.27]	7.94 [7.05; 8.83]	11.01 [9.78; 12.24]	n.s.	^**	^**	^**
BBI_meanNN	828.42 [775.26; 881.57]	906.95 [879.27; 934.63]	883.79 [853.34; 914.23]	n.s	n.s	n.s.	n.s.
BBI_sdNN	33.44 [25.06; 41.81]	36.98 [32.8; 41.09]	47.82 [43.45; 52.19]	n.s.	^**	^*	^**
BBI_rmssd	17.43 [12.00; 22.87]	20.53 [18.22; 22.84]	32.90 [28.25; 37.55]	n.s.	^**	^*	^**
BBI_pNN50	2.48 [1.45; 3.52]	3.44 [2.73; 4.14]	0.14 [0.09; 0.18]	n.s.	^**	^*	^**
BBI_HFn	0.65 [0.60; 0.70]	0.67 [0.63; 0.70]	0.62 [0.58; 0.67]	n.s.	n.s.	n.s.	n.s.
BBI_LFn	0.34 [0.29; 0.39]	0.32 [0.29; 0.36]	0.37 [0.32; 0.41]	n.s.	n.s.	n.s.	n.s.
BBI_LF/HF	2.48 [1.45; 3.52]	3.44 [2.73; 4.14]	2.55 [2.06; 3.04]	n.s.	n.s.	n.s.	n.s.
SYS_meanNN	121.3 [107.6; 135]	112.6 [108.3; 117]	122.5 [116.7; 128.2]	n.s.	n.s.	n.s.	^**
DIA_meanNN	61.5 [55.2; 67.9]	58.5 [55.8; 61.2]	60.6 [56.7; 64.5]	n.s.	n.s.	n.s.	n.s.
DIA_VLF	0.48 [0.4;.0.56]	0.48 [0.45; 0.51]	0.39 [0.35; 0.44]	n.s.	^**	n.s.	^**

p ≤ 0.01;

^**

p ≤ 0.001; n.s. p ≥ 0.001; IDC_HR, idiopathic cardiomyopathic patients at high risk of sudden cardiac death; IDC_LR, idiopathic cardiomyopathic patients at low risk of sudden cardiac death; CON, control group; bslope, bradycardic fluctuations; tslope, tachycardic fluctuations; BBI, beat-to-beat cardiac interval; SYS, systolic blood pressure; DIA, diastolic blood pressure.