Asthma exacerbation trajectories and their predictors in children with incident asthma
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Journal title
Annals of Allergy, Asthma & ImmunologyDate Published
2019-09Publication Volume
123Publication Issue
3Publication Begin page
293Publication End page
300.e2
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Background: Asthma exacerbation trajectories in children after incident asthma diagnosis are understudied. Objective: To identify trajectories of asthma exacerbation and predictors of these trajectories in children with incident asthma. Methods: Children from the National Longitudinal Survey of Children and Youth, Canada, with incident asthma were followed-up for up to 12 years during childhood. Latent class growth modeling was used to identify distinct asthma exacerbation trajectory groups. Multinomial logistic regression was performed to identify predictors of trajectory group membership. Results: The mean age at asthma diagnosis among 403 children was 5.9 years. Three distinct trajectories were identified: low increasing (21.3% of children), medium decreasing (45.8% of children), and high decreasing (32.8% of children). Asthma attack probability increased gradually after diagnosis in low increasing group, decreased from moderate level after diagnosis to almost zero probability at the end of follow-up in the medium decreasing group, and decreased after diagnosis but remained higher in the high decreasing group than the other 2 groups at 12 years after diagnosis. Children having more siblings at home were more likely to belong to the medium decreasing and high decreasing trajectory groups, whereas children older at asthma diagnosis were less likely to belong to the medium decreasing and high decreasing trajectory groups than the low increasing trajectory group. Conclusion: Our results suggest that children with incident asthma follow 3 distinct trajectories of asthma exacerbations after asthma diagnosis. The trajectory group with initial moderate exacerbation probability has better long-term prognosis.Citation
Nasreen S, Wilk P, Mullowney T, Karp I. Asthma exacerbation trajectories and their predictors in children with incident asthma. Ann Allergy Asthma Immunol. 2019 Sep;123(3):293-300.e2. doi: 10.1016/j.anai.2019.05.013. Epub 2019 May 23. PMID: 31128235.DOI
10.1016/j.anai.2019.05.013ae974a485f413a2113503eed53cd6c53
10.1016/j.anai.2019.05.013
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