Bronchial reactivity in the community.

Descriptive epidemiology of bronchial reactivity in an adult population: results from a community study.

The bronchial response to inhaled histamine has been suggested as an epidemiological tool for assessing the prevalence of asthma, though the exact relationship between reactivity and asthma is unknown. Tests of bronchial reactivity to histamine were carried out in 511 subjects aged 18-64 years, randomly selected from the population in two areas of the South of England, who had returned question...

Analysis of bronchial reactivity in epidemiological studies.

The measurement of bronchial reactivity in epidemiological studies has the advantage of quantifying an objective physiological feature of asthma. Bronchial reactivity was developed in a clinical setting and has been conventionally expressed as the dose of agonist producing a 20% fall in FEV1 (PD20). As PD20 can be estimated for less than 20% of subjects in general community surveys with the dos...

The "healthy passive smoker": relationship between bronchial hyper-reactivity in school children and maternal smoking.

Increased wheeze but not bronchial hyperreactivity near power stations.

STUDY OBJECTIVE In a previous study a higher than expected prevalence of asthma was found in Lake Munmorah, a coastal town near two power stations, compared with another coastal control town. This study aimed to compare atopy, bronchial hyperreactivity, and reported symptoms of asthma in the power station town and a second control area with greater socioeconomic similarity. DESIGN A cross sec...

Bronchial reactivity indices are determinants of health-related quality of life in patients with stable asthma.

BACKGROUND A very weak relationship has been reported between the health-related quality of life (HRQL) of patients with asthma and their degree of airway hyper-responsiveness (AHR), evaluated in terms of sensitivity. However, this relationship still has not been sufficiently explored for bronchial reactivity indices. OBJECTIVES To analyse the relationship between bronchial reactivity and sen...