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Active and uncontrolled asthma among children exposed to air stack emissions of sulphur dioxide from petroleum refineries in Montreal, Quebec: a cross-sectional study.

https://arctichealth.org/en/permalink/ahliterature124918
Source
Can Respir J. 2012 Mar-Apr;19(2):97-102
Publication Type
Article
Author
Leylâ Deger
Céline Plante
Louis Jacques
Sophie Goudreau
Stéphane Perron
John Hicks
Tom Kosatsky
Audrey Smargiassi
Author Affiliation
Direction de santé publique de l' Agence de las sante services sociaux de Montréal, Université de Montréal, Québec.
Source
Can Respir J. 2012 Mar-Apr;19(2):97-102
Language
English
Publication Type
Article
Keywords
Air Pollutants - adverse effects
Anti-Asthmatic Agents - therapeutic use
Asthma - chemically induced - drug therapy - epidemiology
Child
Child, Preschool
Cross-Sectional Studies
Female
Humans
Industrial Waste - adverse effects
Infant
Male
Petroleum Pollution - adverse effects
Prevalence
Quebec - epidemiology
Questionnaires
Regression Analysis
Sulfur Dioxide - adverse effects
Treatment Outcome
Abstract
Little attention has been devoted to the effects on children's respiratory health of exposure to sulphur dioxide (SO2) in ambient air from local industrial emissions. Most studies on the effects of SO(2) have assessed its impact as part of the regional ambient air pollutant mix.
To examine the association between exposure to stack emissions of SO(2) from petroleum refineries located in Montreal's (Quebec) east-end industrial complex and the prevalence of active asthma and poor asthma control among children living nearby.
The present cross-sectional study used data from a respiratory health survey of Montreal children six months to 12 years of age conducted in 2006. Of 7964 eligible households that completed the survey, 842 children between six months and 12 years of age lived in an area impacted by refinery emissions. Ambient SO(2) exposure levels were estimated using dispersion modelling. Log-binomial regression models were used to estimate crude and adjusted prevalence ratios (PRs) and 95% CIs for the association between yearly school and residential SO(2) exposure estimates and asthma outcomes. Adjustments were made for child's age, sex, parental history of atopy and tobacco smoke exposure at home.
The adjusted PR for the association between active asthma and SO(2) levels was 1.14 (95% CI 0.94 to 1.39) per interquartile range increase in modelled annual SO(2). The effect on poor asthma control was greater (PR=1.39 per interquartile range increase in modelled SO(2) [95% CI 1.00 to 1.94]).
Results of the present study suggest a relationship between exposure to refinery stack emissions of SO(2) and the prevalence of active and poor asthma control in children who live and attend school in proximity to refineries.
Notes
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PubMed ID
22536578 View in PubMed
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Home environmental factors associated with poor asthma control in Montreal children: a population-based study.

https://arctichealth.org/en/permalink/ahliterature142755
Source
J Asthma. 2010 Jun;47(5):513-20
Publication Type
Article
Date
Jun-2010
Author
Leylâ Deger
Céline Plante
Sophie Goudreau
Audrey Smargiassi
Stéphane Perron
Robert L Thivierge
Louis Jacques
Author Affiliation
Département de santé environnementale et santé au travail, Université de Montréal, Montréal, Canada.
Source
J Asthma. 2010 Jun;47(5):513-20
Date
Jun-2010
Language
English
Publication Type
Article
Keywords
Age Distribution
Air Pollution, Indoor - adverse effects
Asthma - epidemiology - etiology - physiopathology
Bronchial Hyperreactivity - epidemiology - etiology - physiopathology
Child
Child, Preschool
Confidence Intervals
Cross-Sectional Studies
Environmental Exposure - adverse effects
Environmental monitoring
Epidemiological Monitoring
Female
Health Surveys
Humans
Incidence
Infant
Male
Multivariate Analysis
Prognosis
Quebec - epidemiology
Questionnaires
Risk assessment
Severity of Illness Index
Sex Distribution
Socioeconomic Factors
Urban Population
Abstract
Home environmental exposures may aggravate asthma. Few population-based studies have investigated the relationship between asthma control in children and home environmental exposures.
Identify home environmental exposures associated with poor control of asthma among asthmatic children less than 12 years of age in Montreal (Quebec, Canada).
This cross-sectional population-based study used data from a respiratory health survey of Montreal children aged 6 months to 12 years conducted in 2006 (n = 7980). Asthma control was assessed (n = 980) using an adaptation of the Canadian asthma consensus report clinical parameters. Using log-binomial regression models, prevalence ratios (PRs) with 95% confidence intervals (95% CIs) were estimated to explore the relationship between inadequate control of asthma and environmental home exposures, including allergens, irritants, mold, and dampness indicators. Subjects with acceptable asthma control were compared with those with inadequate disease control.
Of 980 children with active asthma in the year prior to the survey, 36% met at least one of the five criteria as to poor control of their disease. The population's characteristics found to be related with a lack of asthma control were younger age, history of parental atopy, low maternal education level, foreign-born mothers, and tenant occupancy. After adjustments, children living along high-traffic density streets (PR, 1.35; 95% CI, 1.00-1.81) and those with their bedroom or residence at the basement level (PR, 1.30; 95% CI, 1.01-1.66) were found to be at increased risk of poor asthma control.
Suboptimal asthma control appears to be mostly associated with traffic, along with mold and moisture conditions, the latter being a more frequent exposure and therefore having a greater public health impact.
PubMed ID
20560826 View in PubMed
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