Rationale: International guidelines promote the use of post-bronchodilator spirometry values
in the definition and severity classification of chronic obstructive pulmonary disease …

Background: The Global Initiative for Obstructive Lung Disease (GOLD) has defined chronic
obstructive pulmonary disease (COPD) as a post-bronchodilator ratio of forced expiratory …

Gender differences in respiratory health have, in recent years, been the focus of
considerable scientific effort. This paper reviews recent literature on respiratory health in …

Background There is limited and conflicting evidence on the effect of menopause on asthma.
Objectives We sought to study whether the incidence of asthma and respiratory symptoms …

Background Respiratory symptoms are common in the general population, and their
presence is related to Health-related quality of life (HRQoL). The objective was to describe …

Rationale: There is little knowledge of variations in respiratory symptoms during the
menstrual cycle in a general population, and potential modifying factors are not investigated …

The aim of our study was to examine sex-specific associations between different aspects of
socioeconomic status (SES)(educational level, occupational status, income) and lung …

There is limited information about potential impact of maternal age on the respiratory health
of offspring. We investigated the association of maternal age at delivery with adult …

Background: International guidelines recommend that pulmonary reference populations
consist of never-smokers without respiratory diseases or symptoms, but the diseases and …

BACKGROUND: Little is known concerning the precision of self-reported health economic
data. AIM: To investigate the repeatability of self-reported health economic cost and …