Psychometric validation of the severity of chronic cough diary, leicester cough questionnaire, and a cough severity visual analogue scale in patients with refractory chronic cough

This study evaluated the psychometric validity and measurement properties of the Severity of Chronic Cough Diary, the Leicester Cough Questionnaire, and a cough severity visual analog scale, using data from 310 patients who participated in a 12-week Phase 2b trial of eliapixant for the treatment of refractory chronic cough. The primary endpoint of the trial was the change from baseline in 24-hour cough count, which was measured using the Vitalograph VitaloJAK recording device.