Prevalence and predictors of atopy among young Danish adults

Summary Background The prevalence of atopic diseases is increasing in western countries, and environmental exposures in childhood may influence development of atopic sensitization. Objective To investigate the prevalence and predictors of atopy among young Danish adults. Methods Of 940 invited subjects, aged 19–29 years, complete data were obtained from 525 (56%) subjects. All completed a questionnaire concerning asthma, rhinitis, preschool nursery care, smoking habits, family size, education and employment. A skin prick test was performed, and pulmonary function was measured using standard techniques. Atopy was defined as a positive skin prick test. Results The frequency of atopy was 32% (males 43% vs. females 23%, P