The goal of this study was to analyze the remission and persistence of childhood asthma in adolescents.

The study population included 205 subjects with asthma studied from age 7 to 8 years up until the study end-point age of 19 years.

Subjects with asthma were identified by distributing an extended International Study of Asthma and Allergies in Childhood questionnaire to the families of all children in the first and second grade in 3 municipalities in northern Sweden. The diagnosis of asthma was confirmed in 248 of the subjects identified according to the questionnaire by using structured interviews and clinical assessments. These subjects were then assessed for their status of asthma, family history of asthma, asthma medication use (including inhaled corticosteroids), asthma severity score, presence of physician-diagnosed rhinitis or eczema, and traffic exposure and home exposure to dampness by using annual questionnaires until 19 years of age. In addition, some patients...

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