(a) Phase 1, P1 | ||
P1 sound parameter | Correlation with cough strength VAS | |
Free-field microphone | Contact microphone | |
PW | 0.84 (0.69 to 0.96) | 0.76 (0.4273 to 0.90) |
Ep | 0.86 (0.64 to 0.93) | 0.62 (0.53 to 0.88) |
RT | 0.29 (−0.04 to 0.78) | 0.31 (−0.24 to 0.69) |
D | 0.47 (0.20 to 0.75) | 0.47 (0.20 to 0.75) |
Fp | 0.32 (0.24 to 0.71) | 0.70 (0.11 to 0.88) |
BW | 0.10 (−0.20 to 0.30) | 0.06 (−0.33 to 0.80) |
Fc | 0.44 (0.16 to 0.87) | 0.71 (0.62 to 0.79) |