Study objectives-Several recent reports show a negative association between asthma and family size or birth order, but this association was not detected in data collected between 10 and 30 years ago.
This study compared the association between sibship size and asthma in three surveys using the same methodology in 1977,1985/86, and 1993/94.
Design-Cross sectional comparison of the 1977,1985186, and 1993194 surveys.
Settings-Study areas in England and Scotland Participants-Parents of children between 5 to 11 years in England and Scotland were asked about asthma and bronchitis attacks in the last 12 months, and wheeze in their child.
Approximately 9000 children participated in each of the surveys.
The overall association between asthma, defined as asthma attacks or wheeze, and total number of siblings was not significant (p=0.22), but an only child had a higher prevalence of asthma than children with siblings (OR 0.87 95% CI 0.76 to 0.98).
The interaction between year of survey and sibship size on asthma was not significant (p=0.36).
There was no association between asthma and birth order.
A significant interaction between social class and year of survey on asthma was detected (p=0.004).
In the 1993/94 survey children whose fathers had a semi or unskilled manual occupation had a higher prevalence of asthma (16%) than children whose fathers belonged to other social classes (13%). (...)
Mots-clés Pascal : Asthme, Enfant, Homme, Royaume Uni, Europe, Epidémiologie, Prévalence, Etude transversale, Classe sociale, Dimension famille, Rang naissance, Appareil respiratoire pathologie, Bronchopneumopathie obstructive
Mots-clés Pascal anglais : Asthma, Child, Human, United Kingdom, Europe, Epidemiology, Prevalence, Cross sectional study, Social class, Family size, Birth order, Respiratory disease, Obstructive pulmonary disease
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 99-0127681
Code Inist : 002B06C02. Création : 16/11/1999.