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Table 8 Correlation between HRV indices obtained from ECG and SCG on recordings b001–b020

From: Comparison of HRV indices obtained from ECG and SCG signals from CEBS database

HRV index

\(R^2\) (reference algorithm)

\(R^2\) (tested algorithm)

Mean NN

1.0000

0.9925

SDNN

0.9263

0.0533

RMSSD

0.5983

0.0546

NN50

0.3566

0.0133

pNN50

0.3854

0.0168

\({{\text{PSD}}}_{{\text{LF}}}\)

1.0000

0.9844

\({{\text{PSD}}}_{{\text{VLF}}}\)

0.9379

0.0416

\({{\text{PSD}}}_{{\text{HF}}}\)

1.0000

0.9862

LF/HF

0.9977

0.0360