S142 Investigating patterns in 24 hours of coughing

Introduction and ObjectivesAmbulatory 24 h cough monitoring is a relatively new technique, and so far few studies have investigated hourly variation in cough frequency. We analysed data from previous studies in three different disease groups to compare patterns throughout the day.MethodsWe studied chronic cough (duration>8 weeks) [n=70, median age 58 yrs (IQR 49–64), 67.1% female], acute cough in otherwise healthy volunteers (duration