The prevalence of wheezing, 'asthma', treatment for 'asthma', and school absence as a result of wheezing in Nottingham was calculated from a questionnaire survey of parents of 4750 children in a random sample of primary schools. A response was achieved for 3805 (80%) children of whom 438 (11.5%) had had episodes of wheezing in the last year and 224 (5.9%) had been diagnosed as having asthma. As...

The present study is aimed to describe the changes in the prevalence of symptoms of asthma, rhinitis and eczema among Brazilian adolescents (AD, 13-14 years old) between Phases 1 and 3 of the International Study of Asthma and Allergies in Childhood (ISAAC). The prevalence of self-reported symptoms of asthma, rhinitis and eczema in AD from five Brazilian cities (Curitiba, Porto Alegre, Recife, S...

OBJECTIVE To evaluate the association between weight gain in the first two years of life and the occurrence of wheezing, asthma, serum IgE, skin reactivity and pulmonary function. DESIGN Cohort study. SETTING The metropolitan region of Salvador, Bahia, Brazil. SUBJECTS The association was studied between 1997 and 2005 in 669 children up to 11 years of age. Data were collected on asthma an...

BACKGROUND Observational studies have reported an association between maternal use of paracetamol in pregnancy and childhood asthma, which was not explained by measured confounding factors. However, it is possible that this relation might be confounded by unmeasured behavioural factors linked to paracetamol usage; if that were the case, effects of similar magnitude of partner's paracetamol use ...

BACKGROUND Paracetamol use has been associated with increased prevalence of asthma in children and adults, and one study reported an association between pre-natal exposure to paracetamol and asthma in early childhood. METHODS To examine if pre-natal exposure to paracetamol is associated with the risk of asthma or wheezing in early childhood, we selected 66 445 women from the Danish National B...

Understanding the social and physical contributors to asthma risk is an important undertaking, and the article by Sternthal et al makes several very significant contributions toward this goal. In this study the authors recruited a cohort of women during pregnancy and followed the children through to age 2 years. Five hundred ten women participated in this study in which they were asked about th...

OBJECTIVE Bottle feeding in the bed or crib before sleep time has been associated with an increased risk of wheezing in the first year of life. We examined whether bottle feeding in the bed or crib before sleep time in the first year of life is associated with wheezing in the first 5 years of life. METHODS In a prospective cohort study of 448 children with parental history of atopy followed f...

This longitudinal study evaluated the role of hospitalization for acute bronchiolitis as a risk factor for recurrent wheezing. Participants were children from a 1993 cohort in a southern Brazilian city. Hierarchical multivariate analysis showed that previous hospitalization for bronchiolitis was the most important risk factor for recurrent wheezing, with an odds ratio of 4.9. This strong associ...

Data collected from the Canadian National Longitudinal Survey of Children and Youth (NLSCY) in 1994/95 and 1996/97 were used to measure longitudinal health outcomes among children with asthma. Over 10 000 children aged 1 to 11 years with complete data on asthma status in both years were included. Outcomes included hospitalizations and health services use (HSU). Current asthma was defined as chi...