Treatment group (n=25) | Placebo group (n=25) | p Value | |

Cough resolution, n (%) | 12 (48) | 4 (16) | 0.015 |

VCD score at end of treatment, median (IQR) | 0.5 (0.0–2.0) | 2.25 (1.15–2.9) | 0.02 |

VCD score at end of study on day 28, median (IQR) | 0.0 (0.0–1.5) | 1.0^{*}(0.0–2.4) | 0.17^{*} |

Change^{†} in VCD score, median (IQR) | 1.5 (0.0–2.5) | 0.5 (−0.4–1.0) | 0.02 |