Respiratory effects associated with indoor nitrogen dioxide exposure in children
| Autor: | Robert M Douglas, Louis S. Pilotto, Robyn G Attewell, Sue Wilson |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
Male
medicine.medical_specialty Epidemiology Nitrogen Dioxide Respiratory Tract Diseases NITROGEN DIOXIDE EXPOSURE chemistry.chemical_compound Human health Environmental health medicine Sore throat Humans Nitrogen dioxide Prospective Studies Alternate weeks Respiratory system Child Schools Respiratory illness business.industry Common cold Environmental Exposure General Medicine medicine.disease Surgery chemistry Air Pollution Indoor Female medicine.symptom business |
| Zdroj: | International Journal of Epidemiology. 26:788-796 |
| ISSN: | 1464-3685 0300-5771 |
| DOI: | 10.1093/ije/26.4.788 |
| Popis: | Background. The human health effects of exposure to indoor nitrogen dioxide (NO 2 ) are unclear, and few studies have examined the effects of short-term peak levels of exposure. Methods. The association between indoor exposure to NO 2 and respiratory illness was examined in 388 children aged 6-11 years. The NO 2 levels were monitored during winter in 41 classrooms, from four schools with unflued gas heating and four schools with electric heating. Each classroom was monitored daily with 6-hour passive diffusion badge monitors over nine alternate weeks, and with hourly monitors over two of those weeks. Children living in homes with unflued gas appliances were also monitored daily over four evenings during times of gas use. Results. Exposure to NO 2 at hourly peak levels of the order of ≥80 ppb, compared with background levels of 20 ppb, was associated with a significant increase in sore throat, colds and absences from school. An increase in cough with phlegm was marginally significant. Significant dose-response relationships were demonstrated for these four measures with increasing levels of NO 2 exposure. Conclusions. Short-term peak levels of exposure are important to consider in relation to adverse respiratory effects associated with NO 2 exposure. |
| Databáze: | OpenAIRE |
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