Table 1.

Correlations of Manually and Automatically Generated HRV Measures Using Two Different Approaches

	Manual versus Autoa		Manual versus Auto 2b
HRV Measure	R	P‐Value	R	P‐Value
DCT1	0.903	<0.001	0.371	<0.001
DCT5	0.980	<0.001	0.427	<0.001
SDNN	0.653	<0.001	0.294	0.003
RMSSD	0.761	<0.001	0.208	0.038
LF	0.278	0.005	0.148	0.145
HF	0.603	<0.001	0.105	0.304

^aAuto refers to automatic R‐peak detection as proposed in the present study mainly based on a Shannon entropy envelope estimator and a subsequent Hilbert transformation;

^bAuto 2 refers to a standard R‐peak identification based on the Pan–Tompkins algorithm.

Abbreviations as in text.