Aim: The prevalence of airway obstruction varies widely with the definition used. Objectives:
To study differences in the prevalence of airway obstruction when applying four international …

The prevalence of chronic respiratory symptoms and chronic airflow limitation (CAFL) was
determined in a multicentric epidemiological study carried out in seven different areas of …

To determine the health and functional impact of undiagnosed airflow obstruction for
subjects in the general population, we used data obtained as part of the Third National …

Relevant information on the prevalence of chronic obstructive pulmonary disease (COPD)
and its trends is scarce. In the present study, we compare the prevalence rates and potential …

Background∼ 5–10% of adults may have undiagnosed airflow obstruction. The objective of
this study was to develop a population-based case-finding strategy to assess the prevalence …

Data on the individual and collective impact of chronic airflow obstruction at a population
level are scarce. In a nationwide survey, dyspnoea, quality of life and missed working days …

Study objectives: The Venn diagram of obstructive lung disease (OLD) has been recently
quantified. We aimed to quantify the proportion of the general population with OLD, and the …

AIM: To review the currently available literature comparing the FEV1/FVC< LLN with a fixed
value of FEV1/FVC< 0.70 in diagnosing airflow obstruction in subjects aged> 40 years …

Background The severities of COPD (FEV 1% predicted) and airflow obstruction (FEV
1/FVC) are considered to be due to both emphysema and small airways disease. To our …

The aim of the present study was to determine the external validity of a recently developed
questionnaire for the identification of patients at increased risk of airflow limitation in …