One hundred and ninety three children with asthma and 318 controls aged 1-4 years were
evaluated for atopic heredity and exposure to possible indoor risk factors for asthma-for …

To investigate the influence of indoor air quality on respiratory health, a questionnaire-based
study of 17,962 Canadian schoolchildren in kindergarten through grade 2 was carried out in …

Our aim was to examine the contribution of an infant's indoor environment to childhood
asthma using prospective data. We conducted a cross-sectional asthma survey in 1995 on …

Background. The risk of asthma associated with pets and other indoor exposures has been
examined in both cross-sectional and prospective studies of younger children. However …

This study examined the relation between indoor environmental factors and childhood
asthma in a subtropical area. A hospital‐based case‐control study was performed in …

In a case-control study carried out in Montréal, Québec, Canada, between 1988 and 1990,
indoor environmental factors were studied in relation to the incidence of asthma among 3 …

Seasonality of asthma may result from varying exposures. This cross‐sectional study was
designed to examine the relationship between indoor environmental factors and seasonal …

The relation between exposure to environmental tobacco smoke and childhood asthma is
not clear. A 1993 study of 892 subjects age 6-17 years (87.5% of 1,019 eligible subjects) …

Eighty per cent of all childhood asthma has its onset by 3 years of age. A similar percentage
of childhood asthma is associated with atopy (presence of allergic rhinitis or eczema and/or …

A review of the present understanding of asthma leads to the following conclusions: an
elevated IgE is the principal risk factor in the development of childhood asthma; secondary …