Table 1 IBI and HR correlation analysis and the relationship of agreement between IH and ECG.

From: In-ear infrasonic hemodynography with a digital health device for cardiovascular monitoring using the human audiome

 

No. of pairs

r

d ± σ

IBI

  

(ms)

 All

3744

0.988

0.05 ± 21.1

 Regular breathing

1448

0.979

0.8 ± 26.3

 Regular + music

1176

0.992

− 0.6 ± 18.6

 Resonant breathing

1120

0.994

− 0.5 ± 15.3

HR

  

(bpm)

 All

198

0.994

0.03 ± 1.00

 Regular breathing

80

0.997

0.03 ± 0.75

 Regular + music

61

0.991

− 0.09 ± 1.12

 Resonant breathing

57

0.994

0.15 ± 1.22

  1. The number of IH and ECG pairs, the Pearson’s correlation coefficient (r), and the relationship of agreements (d ± σ) in the IBI and HR measurements for the entire SR sample and for separate subsamples with subjects performing regular breathing, regular breathing while listening to music, and resonant breathing.
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