A refined method of quantifying deceleration capacity index for heart rate variability analysis

Table 2 Measures of original and refined deceleration capacity in healthy and ESRD groups

Variables	Healthy (n = 191)	ESRD (n = 51)	p value	AUC	Youden’s index
24-h
DC_org (msec)	13.43 ± 5.60	4.36 ± 2.60	< 0.001	0.945 ± 0.017	0.766
DC_ref (msec)	17.77 ± 6.79	6.25 ± 3.59	< 0.001	0.944 ± 0.018	0.774
2-h
DC_org (msec)	11.94 ± 5.28	3.50 ± 1.87	< 0.001	0.960 ± 0.013	0.802
DC_ref (msec)	16.61 ± 6.94	4.81 ± 2.39	< 0.001	0.969 ± 0.011	0.842
30-min
DC_org (msec)	12.40 ± 5.46	3.25 ± 1.94	< 0.001	0.967 ± 0.012	0.825
DC_ref (msec)	17.14 ± 7.12	4.53 ± 2.60	< 0.001	0.971 ± 0.011	0.830

DC_org original deceleration capacity, DC_ref refined deceleration capacity, ESRD end-stage renal disease, AUC area under receiver operating characteristic curve

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