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Table 14 Correlation between HRV indices obtained from ECG and SCG on recordings p001–p020 using robust linear model

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

HRV index \(R^2\) value Robust model fit method
Mean NN 0.9984 LSq
SDNN 0.8354 LAR
RMSSD 0.1436 LSq
NN50 0.8417 LAR
pNN50 − 0.0893 LAR
\({{\text{PSD}}}_{{\text{LF}}}\) 0.9997 LSq
\({{\text{PSD}}}_{{\text{VLF}}}\) 0.8349 LAR
\({{\text{PSD}}}_{{\text{HF}}}\) 0.9997 LSq
LF/HF 0.9938 LAR