A presumed consequence of using a fixed ratio for the definition of airflow limitation (AFL)
has been overdiagnosis among older individuals and underdiagnosis among younger …

The true incidence of chronic obstructive pulmonary disease is largely unknown, because
the few longitudinal studies performed have used diagnostic criteria no longer …

Aim of this study was to derive new lung function reference equations and compare the
predicted values with those from three sets of existing reference equations: one derived from …

OBJECTIVE: To assess underdiagnosis of chronic obstructive pulmonary disease.
MATERIAL AND METHODS: Two cross-sectional studies of respiratory symptoms and …

The aim of the present study was to evaluate the association between history of tuberculosis
and airflow obstruction. A population-based, multicentre study was carried out and included …

Abstract Setting: Cross-sectional epidemiological study based on a representative sample of
the general population in northern Sweden. Objectives: To assess the prevalence of …

We examined the course and prognosis in subjects selected from the general population
who had chronic airflow obstruction at the time of their enrollment in a longitudinal …

Using a multistage stratified geographic cluster sample of households living in an unpolluted
area of Northern Italy (near Venice), we enrolled 3289 inhabitants (aged 8-64 yr) for a …

Se ha estudiado la prevalencia de los síntomas respiratorios habituales y de la limitación
crónica al flujo aéreo mediante un estudio epidemiológico multicéntrico realizado en 7 …