Table 3. Relationship between parameters of the breath sound spectrum and clinical factors of infants diagnosed with RSV-induced acute bronchiolitis
Oxygen Severity of Length of Saturation Bronchiolitis Hospitalization
CC p-valuea CC p-value CC p-value
【Expiration and Inspiration Sound Power】
Power of I LF (dB) -0.062 0.730 -0.064 0.725 0.061 0.737
Power of E LF (dB) -0.134 0.456 0.089 0.620 0.126 0.486
Power of I ML (dB) -0.202 0.259 0.015 0.935 0.122 0.498
Power of E ML (dB) -0.133 0.461 0.080 0.658 0.093 0.609
Log・E/I LF -0.111 0.538 0.164 0.361 0.101 0.575
Log・E/I MF -0.440 0.010 0.487 0.004 0.062 0.733
【Inspiration spectrum Curve Indices】
A3/AT -0.111 0.537 -0.075 0.680 0.081 0.656
B4/AT -0.152 0.398 -0.039 0.831 0.022 0.904
RPF75 -0.230 0.198 0.069 0.701 0.119 0.511
RPF50 0.139 0.441 -0.038 0.833 0.004 0.981
CC: correlation coefficient, a: Pearson’s correlation coefficient. Bold letters represent values with a significant difference.