Table 3—

Correlations between different units of cough and subjective measures

LCQDay VASNight VAS
r coefficientp-valuer coefficientp-valuer coefficientp-value
log explosive phases
 24-h-0.53≤0.001
 Day-0.49≤0.0010.45≤0.001
 Night-0.360.0020.67≤0.001
log cough seconds
 24-h-0.53≤0.001
 Day-0.50≤0.0010.44≤0.001
 Night-0.350.0030.64≤0.001
log cough epochs
 24-h-0.46≤0.001
 Day-0.360.0020.400.001
 Night-0.310.0080.60≤0.001
  • LCQ: Leicester Cough Questionnaire; VAS: visual analogue scale. Note that negative correlations are present for the LCQ as lower scores and worse quality of life were associated with higher cough rates.