Objectives The project Seoul Atopy ∙ Asthma-friendly School investigated the current status of childhood asthma to enable formulation of a preventative policy. We evaluated the current prevalence of childhood asthma in Seoul and its trends and related factors.
Methods The project was conducted annually from 2011 to 2016 and involved around 35 000 children aged 1-13 years. Based on the International Study of Asthma and Allergies in Childhood guidelines, the survey involved parents. The associations of the particulate matter (PM10) concentration, and the number of days on which the daily air quality guidance level was exceeded in the 25 districts of Seoul, with the prevalence of asthma were assessed.
Results The age-standardized asthma prevalence in 2011 and 2016 was 6.74 and 4.02%, respectively. The prevalence of lifetime asthma treatment and treatment during the last 12 months tended to decrease from 2011 to 2016. Asthma treatment was significantly correlated with the number of days on which the daily air quality guidance level was exceeded, but not with the PM10 concentration.
Conclusions This study reports the prevalence of asthma among children in Seoul and confirmed the relationship between childhood asthma and known risk factors in a large-scale survey.
Summary
Korean summary
서울시 아토피 천식 안심학교 사업을 통하여 2011년부터 2016년까지 약 25만명의 아동들을 대상으로 천식 유병률을 파악하고 관련 요인을 분석하였다.
천식의 연령표준화 유병률은 2011년 6.745에서 2016년 4.02%로 감소 추세를 보였다. 미세먼지(PM10)의 농도가 기준을 초과한 일수는 천식으로 인한 병원 치료 건 수와 상관성을 보였다.
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