Prevalence of allergic rhinitis and risk factors in school children

Abstract

Objective: To evaluate the prevalence and the risk factors of allergic rhinitis in a particular area. Methods: The main study group consisted of all school children in Kemalpasa district aged 13-14 years. Children with current rhinitis based on responses given in ISAAC questionnaire survey were further evaluated for confirmation. Parents responded to a more detailed questionnaire about allergic diseases and risk factors. Then peak nasal inspiratory flow (PNIF) was evaluated to objectively assess nasal patency. Skin-prick test was performed for ten common allergens. Results: The questionnaire was answered by 90.8% (1373) of children. The prevalence of physician-diagnosed AR was 11.1%. Current rhinitis was found to be 31.3%. Of this group, 55.0% were admitted for the parent questionnaire and tests. Precisely, 90.3% of children accepted PNIF evaluation, and %10.1 of them had a nasal obstruction. Skin-prick tests revealed allergy for at least 1 allergen in 16.6% of children. The present study showed that the children with maternal allergic rhinitis history had 2,18 fold, and the children with seasonal allergic rhinitis had 2,11 fold higher possibility of sensitization to an allergen. The probability of perennial allergic rhinitis was 3,1 fold higher in the children who had siblings with allergic rhinitis. Conclusion: We included all children in a specific age group living in an area in our survey. As well as we found the prevalence of current rhinitis with the ISAAC questionnaire; we also evaluated peak nasal inspiratory flow and used skin-prick tests that yielded objective results.