Outdoor air pollution and emergency department visits for asthma among children and adults: A case-crossover study in northern Alberta, Canada

Villeneuve, Paul J.; Chen, Li; Rowe, Brian H.; Coates, Frances

doi:10.1186/1476-069x-6-40

Cited by 162 publications

(128 citation statements)

References 67 publications

Supporting

Mentioning

105

Contrasting

Unclassified

Order By: Relevance

“…Our tendency to find stronger associations during the warm season is consistent with previous findings (10)(11)(12)(13)(14)(15), and although we are unclear about the underlying mechanism for these apparent seasonal differences, it may simply be that during the warm season a greater proportion of asthma exacerbations are caused by air pollution. Rates of emergency department visits for pediatric asthma increase by 60% during the cold season; this increase is largely attributable to exacerbations triggered by viral infections.…”

Section: Table 4 Sensitivity Analyses: Rate Ratios and 95% Confidencsupporting

confidence: 82%

Short-term Associations between Ambient Air Pollutants and Pediatric Asthma Emergency Department Visits

Strickland¹,

Darrow²,

Klein³

et al. 2010

Am J Respir Crit Care Med

319

231

View full text Add to dashboard Cite

Rationale: Certain outdoor air pollutants cause asthma exacerbations in children. To advance understanding of these relationships, further characterization of the dose-response and pollutant lag effects are needed, as are investigations of pollutant species beyond the commonly measured criteria pollutants. Objectives: Investigate short-term associations between ambient air pollutant concentrations and emergency department visits for pediatric asthma. Methods: Daily counts of emergency department visits for asthma or wheeze among children aged 5 to 17 years were collected from 41 Metropolitan Atlanta hospitals during 1993-2004 (n 5 91,386 visits). Ambient concentrations of gaseous pollutants and speciated particulate matter were available from stationary monitors during this time period. Rate ratios for the warm season (May to October) and cold season (November to April) were estimated using Poisson generalized linear models in the framework of a case-crossover analysis. Measurements and Main Results: Both ozone and primary pollutants from traffic sources were associated with emergency department visits for asthma or wheeze; evidence for independent effects of ozone and primary pollutants from traffic sources were observed in multipollutant models. These associations tended to be of the highest magnitude for concentrations on the day of the emergency department visit and were present at relatively low ambient concentrations. Conclusions: Even at relatively low ambient concentrations, ozone and primary pollutants from traffic sources independently contributed to the burden of emergency department visits for pediatric asthma.Keywords: ambient particulate matter; asthma; minors; ozone A broad literature supports associations between ambient air pollutant concentrations and asthma exacerbations (1-3). Children are thought to be particularly susceptible to ambient air pollutants, because their lungs and immune systems are not fully developed, they breathe more air per unit body weight and are typically more active than adults, and their peripheral airways are anatomically smaller than adults so that inflammation results in proportionally greater airway obstruction (4-6). To help advance understanding of the relationships between ambient air pollutant concentrations and asthma exacerbations in children, further characterization of the dose-response and pollutant lag effects are needed, as are investigations of pollutant species beyond the commonly measured urban air pollutants (3, 7). Further investigation of pollutant mixtures and effect modification may also provide insights (8, 9); for example, there have been reports of stronger pollution effects during the warm season (10-15) even though pediatric asthma rates peak during the cold season (16). To lessen concerns about uncontrolled confounding, aggressive control for variables, such as meteorology and seasonal asthma trends, is required.In the present study, we analyzed data from the Study of Particles and Health in Atlanta (SOPHIA) (14,(17)(18)(19)(20)(21), one of...

show abstract

Section: Table 4 Sensitivity Analyses: Rate Ratios and 95% Confidencsupporting

confidence: 82%

Short-term Associations between Ambient Air Pollutants and Pediatric Asthma Emergency Department Visits

Strickland¹,

Darrow²,

Klein³

et al. 2010

Am J Respir Crit Care Med

319

231

View full text Add to dashboard Cite

show abstract

“…1,2,[16][17][18][19] With specific regard to Windsor, Ontario, for 1 day lagged exposures in certain subgroups, Lavigne et al also reported statistically significant associations between ambient air pollution levels and emergency visits for asthma. 20 Exposure to ambient air pollution in Windsor increases the risk of ED visits for asthma.…”

Section: Discussionmentioning

confidence: 99%

Emergency department visits for asthma in relation to the Air Quality Health Index: A case-crossover study in Windsor, Canada

Szyszkowicz

Kousha

2014

Can J Public Health

View full text Add to dashboard Cite

“…Papers published since (or not considered in) the EPA's 2008 review also reported positive (though not always statistically significant) single-pollutant associations for hospital admissions and emergency room visits for: (a) asthma (Bell, Levy & Lin (2008), Colais et al, 2009;Giovannini et al, 2010;Halonen et al, 2008;Jalaludin et al, 2008;Samoli et al, 2011a;Szyszkowicz, 2008;Ueda, Nitta & Odajima, 2010;Villeneuve et al, 2007) and (b) respiratory causes (Colais et al, 2009;Eilstein et al, 2004;Faustini et al, 2013;Granados-Canal et al, 2005;Giovannini et al, 2010;Jayaraman & Nidhi, 2008;Thach et al, 2010;Vigotti et al, 2010).…”

Section: Mortalitymentioning

confidence: 99%

“…Where confounding by co-pollutants was assessed in the studies since the EPA (2008b) review, some robustness to adjustment was demonstrated for these respiratory health outcomes (Giovannini et al, 2010;Ueda, Nitta & Odajima, 2010;Halonen et al, 2008;Jalaludin et al, 2008;Jayaraman & Nidhi, 2008;Villeneuve et al, 2007). For example, Halonen et al (2008) found that NO 2 was a strong and independent predictor of asthma emergency room visits in children in Finland.…”

Section: Mortalitymentioning

confidence: 99%

A rapid assessment of the impact of hazard reduction burning around Sydney, May 2016

Broome¹,

Johnston

Horsley

et al. 2016

Medical Journal of Australia

View full text Add to dashboard Cite

This document presents answers to 24 questions relevant to reviewing European policies on air pollution and to addressing health aspects of these policies. The answers were developed by a large group of scientists engaged in the WHO project "Review of evidence on health aspects of air pollution -REVIHAAP". The experts reviewed and discussed the newly accumulated scientific evidence on the adverse effects on health of air pollution, formulating science-based answers to the 24 questions. Extensive rationales for the answers, including the list of key references, are provided. The review concludes that a considerable amount of new scientific information on the adverse effects on health of particulate matter, ozone and nitrogen dioxide, observed at levels commonly present in Europe, has been published in recent years. This new evidence supports the scientific conclusions of the WHO air quality guidelines, last updated in 2005, and indicates that the effects in some cases occur at air pollution concentrations lower than those serving to establish these guidelines. It also provides scientific arguments for taking decisive actions to improve air quality and reduce the burden of disease associated with air pollution in Europe.This publication arises from the project REVIHAAP and has been co-funded by the European Union. Keywords AIR POLLUTANTS AIR POLLUTION -ADVERSE EFFECTS ENVIRONMENT AND PUBLIC HEALTH EVIDENCE BASED PRACTICE GUIDELINES HEALTH POLICYAddress requests about publications of the WHO Regional Office for Europe to: Publications WHO Regional Office for Europe Scherfigsvej 8 DK-2100 Copenhagen Ø, Denmark Alternatively, complete an online request form for documentation, health information, or for permission to quote or translate, on the Regional Office web site (http://www.euro.who.int/pubrequest). © World Health Organization 2013All rights reserved. The Regional Office for Europe of the World Health Organization welcomes requests for permission to reproduce or translate its publications, in part or in full.The designations employed and the presentation of the material in this publication do not imply the expression of any opinion whatsoever on the part of the World Health Organization concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. Dotted lines on maps represent approximate borderlines for which there may not yet be full agreement.The mention of specific companies or of certain manufacturers products does not imply that they are endorsed or recommended by the World Health Organization in preference to others of a similar nature that are not mentioned. Errors and omissions excepted, the names of proprietary products are distinguished by initial capital letters.All reasonable precautions have been taken by the World Health Organization to verify the information contained in this publication. However, the published material is being distributed without warranty of any kind, either express or implied. ...

show abstract

Outdoor air pollution and emergency department visits for asthma among children and adults: A case-crossover study in northern Alberta, Canada

Abstract: Background: Recent studies have observed positive associations between outdoor air pollution and emergency department (ED) visits for asthma. However, few have examined the possible confounding influence of aeroallergens, or reported findings among very young children.

Cited by 162 publications

References 67 publications

Short-term Associations between Ambient Air Pollutants and Pediatric Asthma Emergency Department Visits

Short-term Associations between Ambient Air Pollutants and Pediatric Asthma Emergency Department Visits

Emergency department visits for asthma in relation to the Air Quality Health Index: A case-crossover study in Windsor, Canada

A rapid assessment of the impact of hazard reduction burning around Sydney, May 2016

Contact Info

Product

Resources

About