A study in The Journal of Allergy and Clinical Immunology: In Practice found that the late diagnosis of asthma is a risk factor for non-remission in asthma patients.
Researchers sought to determine the correlation between asthma remission, age, and sex, and identify risk factors of non-remission. They conducted an analysis using data from a 2016 FinEsS (Finland, Estonia, Sweden) questionnaire. The study included 16,000 patients between the ages of 20 and 69 years from Helsinki and Western Finland.
The individuals were then categorized based on stage of diagnosis: early (0-11 years) intermediate (12-39 years) and late (40-69 years). Additional covariates such as body mass index (BMI), age, sex, and presence of allergic rhinitis or chronic obstructive pulmonary disease (COPD), were also identified among the patients as well as living in a rural area or on a farm during childhood, family history, smoking, and exercise. Remission was then evaluated in 10-year segments.