title: Ambient woodsmoke and associated respiratory emergency department visits in Spokane, Washington.
abstract: Three multivariate receptor algorithms were applied to seven years of chemical speciation data to apportion fine particulate matter to various sources in Spokane, Washington. Source marker compounds were used to assess the associations between atmospheric concentration of these compounds and daily cardiac hospital admissions and/or respiratory emergency department visits. Total carbon and arsenic had high correlations with two different vegetative burning sources and were selected as vegetative burning markers, while zinc and silicon were selected as markers for the motor vehicle and airborne soil sources, respectively. The rate of respiratory emergency department visits increased 2% for a 3.0 microg/m3 interquartile range change in a vegetative burning source marker (1.023, 95% CI 1.009-1.038) at a lag of one day. The other source markers studied were not associated with the health outcomes investigated. Results suggest vegetative burning is associated with acute respiratory events.
authors.affiliation: Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington 98195-4803, USA.
authors.forename: Astrid B
authors.initials: AB
authors.lastname: Schreuder
authors.forename: Timothy V
authors.initials: TV
authors.lastname: Larson
authors.forename: Lianne
authors.initials: L
authors.lastname: Sheppard
authors.forename: Candis S
authors.initials: CS
authors.lastname: Claiborn
mesh_terms: D000393:Air Pollutants / Q000032:analysis* / Q000633:toxicity; D000465:Algorithms; D001151:Arsenic / Q000032:analysis; D002244:Carbon / Q000032:analysis; D004636:Emergency Service, Hospital / Q000706:statistics & numerical data*; D006331:Heart Diseases / Q000453:epidemiology; D006760:Hospitalization; D006801:Humans; D008171:Lung Diseases / Q000453:epidemiology; D015999:Multivariate Analysis; D016012:Poisson Distribution; D012906:Smoke / Q000009:adverse effects / Q000032:analysis*; D014861:Washington / Q000453:epidemiology; D014934:Wood
chemical_list: D000393:Air Pollutants; D012906:Smoke; D002244:Carbon; D001151:Arsenic