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Four subtypes of childhood allergic rhinitis identified by latent class analysis
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  • S. Tolga Yavuz,
  • Ceyda Oksel Karakus,
  • Adnan Custovic,
  • Ömer Kalaycı
S. Tolga Yavuz
Children's Hospital, University of Bonn
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Ceyda Oksel Karakus
Izmir Institute of Technology
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Adnan Custovic
Imperial College London
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Ömer Kalaycı
Hacettepe University Faculty of Medicine
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Abstract

Background: Childhood allergic rhinitis (AR) is clinically highly heterogeneous. We aimed to identify distinct subgroups amongst children with AR, and to ascertain their association with patterns of symptoms, allergic sensitization and concomitant physician-diagnosed asthma. Methods: We recruited 510 children with physician-diagnosed AR, of whom 205 (40%) had asthma. Latent class analysis (LCA) was performed to identify latent structure within the data set using 17 variables (allergic conjunctivitis, eczema, asthma, family history of asthma, family history of allergic rhinitis, skin sensitization to 8 common allergens, tonsillectomy, adenoidectomy). Results: A four−class solution was selected as the optimal model based on statistical fit. We labeled AR latent classes as: (1) AR with grass mono-sensitization and conjunctivitis (n=361, 70.8%); (2) AR with house dust mite sensitization and asthma (n=75, 14.7%); (3) AR with pet and grass polysensitization and conjunctivitis (n=35, 6.9%) and (4) AR among children with tonsils and adenoids removed (n=39, 7.6%). Perennial AR was significantly more common among children in Class 2 (OR 5.83, 95%CI 3.42−9.94, p<0.001) and Class 3 (OR 2.88, 95%CI 1.36−6.13, p=0.006). Mild and intermittent AR symptoms were significantly more common in children in Class 3 compared to those in Class 1. AR was more severe in Class 1, compared to other 3 classes, indicating that upper respiratory symptoms are more severe among children with isolated seasonal rhinitis, than in those with rhinitis and coexisting asthma. Conclusion: We have identified 4 phenotypes in school-age children with AR, which were associated with different patterns of clinical symptoms and comorbidities.

Peer review status:IN REVISION

03 Mar 2021Submitted to Pediatric Allergy and Immunology
08 Mar 2021Reviewer(s) Assigned
11 Apr 2021Review(s) Completed, Editorial Evaluation Pending
12 Apr 2021Editorial Decision: Revise Major