EFFECT OF INDOOR CO_2 CONCENTRATIONS ON WHEEZING ATTACKS IN CHILDREN

摘要

The purpose of this study was to determine whether indoor air pollutants are a risk factor for wheezing attacks in children. We investigated 181 children (≤14 years) in 110 homes. Respiratory symptoms, characteristics of housing and life style factors were obtained using 5 written questionnaire, which was completed by the parents. We found that wheezing attacks in the previous 12 months were only associated with asthma history and were not associated with ETS exposures, fungus spores, allergens and housing factors. Nevertheless, in children with an asthma history, wheezing attacks were associated with indoor CO_2 concentrations (p=0.01). In multivariate analysis, the indoor CO_2 concentrations for children with an asthma history were still associated with wheezing attacks even after adjusting for other factors (OR=1.12 per 10 ppm increase, p<0.05). In this study, we showed that indoor CO_2 concentrations were associated with wheezing attacks in children who had a history of asthma.