Prevalence and risk (odds ratio (95% confidence interval))a of atopy, atopic asthma and self-reported physician diagnosed asthma according to single nucleotide polymorphisms (SNPs) of CHI3L1.

?Atopy was defined as a positive test for specific IgE to at least one of four common inhalant allergens.?Atopic asthma was defined as atopy in combination with self-reported physician-diagnosed asthma.a% (n/ntotal). All such values. Ntotal may differ due to missing data.bp values of chi square test/Fisher's exact test.cOR (95% CI) were estimated in logistic regression models. Models were adjusted for sex, age, bmi, smoking status, and social class.