Introduction: We investigated whether the forced expiratory volume in 6 s (FEV6) can be used as a surrogate for the forced vital capacity (FVC). Methods: The Burden of Obstructive Lung Disease is a multinational cohort study. At baseline, data were collected from adults aged 40 years or older, from 41 sites across 34 countries. Participants from 18 sites were followed up after a median of 8.3 years. Participant...
Background: Chronic cough is a common respiratory symptom with an impact on daily activities and quality of life. Global prevalence data are scarce and derive mainly from European and Asian countries and studies with outcomes other than chronic cough. In this study, we aimed to estimate the prevalence of chronic cough across a large number of study sites as well as to identify its main risk factors using a stan...
Background: Small airway obstruction is a common feature of obstructive lung diseases. Research is scarce on small airway obstruction, its global prevalence, and risk factors. We aimed to estimate the prevalence of small airway obstruction, examine the associated risk factors, and compare the findings for two different spirometry parameters. Methods: The Burden of Obstructive Lung Disease study is a multination...
Background: Small airways obstruction is a common feature of obstructive lung diseases. Research is scarce on small airways obstruction, its global prevalence, and risk factors. We aimed to estimate the prevalence of small airways obstruction, examine the associated risk factors, and compare the findings for two different spirometry parameters. Methods: The Burden of Obstructive Lung Disease study is a multinat...