Of the participants with chronic cough, 47.7% ± 3.8% were current smokers, 45.1% ± 3.9% had nasal symptoms, 42.2% ± 3.7% had an identifiable problem in the nasal cavity, and 46.8% ± 3.9% were suspected to UACS; 26.4 ± 3.5% were compatible with COPD by spirometry, and 14.5 ± 2.8% were compatible with asthma. Chronic laryngitis was used as an alternative to identify GERD-related cough and was presented in 4.1% ± 1.6% of the population. On chest radiography, 4.0% ± 1.2% had an abnormality implying a cause of chronic cough. Patients with chronic cough reported significantly lower quality of life (Table 1).