Table 3.

Correlation coefficients among risk predictors (n = 265,291)

	SDNN	DC	VLF	DFA α1	λ 25s
SDNN	‐	0.30	0.71	−0.00027*	−0.019
DC	0.30	‐	0.46	0.39	−0.30
VLF	0.71	0.46	‐	0.18	−0.20
DFA α1	−0.00027*	0.39	0.18	‐	−0.20
λ25s	−0.019	−0.30	−0.20	−0.20	‐

All correlation coefficients are statistically significant except those marked with *. Abbreviations are explained in the footnote to Table 2.