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Socioeconomic status and environmental noise exposure in Montreal, Canada.

Dale LM, Goudreau S, Perron S, Ragettli MS, Hatzopoulou M, Smargiassi A - BMC Public Health (2015)

Bottom Line: This study's objective was to determine whether socioeconomically deprived populations are exposed to greater levels of environmental noise.Indicators of socioeconomic status were correlated with LAeq24h noise levels estimated with a land-use regression model at a small geographic scale.We found that noise exposure was associated with all socioeconomic indicators, with the strongest correlations found for median household income, proportion of people who spend over 30% of their income on housing, proportion of people below the low income boundary and with a social deprivation index combining several socio-economic variables.

View Article: PubMed Central - PubMed

Affiliation: McGill School of Environment, McGill University, Montréal, QC, Canada. laura.dale@mail.mcgill.ca.

ABSTRACT

Background: This study's objective was to determine whether socioeconomically deprived populations are exposed to greater levels of environmental noise.

Methods: Indicators of socioeconomic status were correlated with LAeq24h noise levels estimated with a land-use regression model at a small geographic scale.

Results: We found that noise exposure was associated with all socioeconomic indicators, with the strongest correlations found for median household income, proportion of people who spend over 30% of their income on housing, proportion of people below the low income boundary and with a social deprivation index combining several socio-economic variables.

Conclusion: Our results were inconsistent with a number of studies performed elsewhere, indicating that locally conducted studies are imperative to assessing whether this double burden of noise exposure and low socioeconomic status exists in other contexts. The primary implication of our study is that noise exposure represents an environmental injustice in Montreal, which is an issue that merits both investigation and concern.

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Sum of quintile values of noise and median household income by dissemination areas in Montreal.
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Fig3: Sum of quintile values of noise and median household income by dissemination areas in Montreal.

Mentions: Figure 3 presents a map that combines the sound levels and the median household income. The areas presenting a double burden of noise exposure and lowest household income are presented in black in the figure. 15.8% (n = 501) of dissemination areas presented a double burden (class 9 and 10). These dissemination areas were mainly found in the center of the Island of Montreal, although not really clustered in one location. Noise levels were low and median incomes were high in the dissemination areas in the west of the Island (Additional file 2: Figures S2). Similar results were obtained with other indicators of the socioeconomic status (maps not shown). For example, using the unemployment rate which is the socioeconomic indicator the least correlated with noise levels, we noted that 15.3% of dissemination areas presented a double burden (data not shown).Figure 3


Socioeconomic status and environmental noise exposure in Montreal, Canada.

Dale LM, Goudreau S, Perron S, Ragettli MS, Hatzopoulou M, Smargiassi A - BMC Public Health (2015)

Sum of quintile values of noise and median household income by dissemination areas in Montreal.
© Copyright Policy - open-access
Related In: Results  -  Collection

License 1 - License 2
Show All Figures
getmorefigures.php?uid=PMC4358710&req=5

Fig3: Sum of quintile values of noise and median household income by dissemination areas in Montreal.
Mentions: Figure 3 presents a map that combines the sound levels and the median household income. The areas presenting a double burden of noise exposure and lowest household income are presented in black in the figure. 15.8% (n = 501) of dissemination areas presented a double burden (class 9 and 10). These dissemination areas were mainly found in the center of the Island of Montreal, although not really clustered in one location. Noise levels were low and median incomes were high in the dissemination areas in the west of the Island (Additional file 2: Figures S2). Similar results were obtained with other indicators of the socioeconomic status (maps not shown). For example, using the unemployment rate which is the socioeconomic indicator the least correlated with noise levels, we noted that 15.3% of dissemination areas presented a double burden (data not shown).Figure 3

Bottom Line: This study's objective was to determine whether socioeconomically deprived populations are exposed to greater levels of environmental noise.Indicators of socioeconomic status were correlated with LAeq24h noise levels estimated with a land-use regression model at a small geographic scale.We found that noise exposure was associated with all socioeconomic indicators, with the strongest correlations found for median household income, proportion of people who spend over 30% of their income on housing, proportion of people below the low income boundary and with a social deprivation index combining several socio-economic variables.

View Article: PubMed Central - PubMed

Affiliation: McGill School of Environment, McGill University, Montréal, QC, Canada. laura.dale@mail.mcgill.ca.

ABSTRACT

Background: This study's objective was to determine whether socioeconomically deprived populations are exposed to greater levels of environmental noise.

Methods: Indicators of socioeconomic status were correlated with LAeq24h noise levels estimated with a land-use regression model at a small geographic scale.

Results: We found that noise exposure was associated with all socioeconomic indicators, with the strongest correlations found for median household income, proportion of people who spend over 30% of their income on housing, proportion of people below the low income boundary and with a social deprivation index combining several socio-economic variables.

Conclusion: Our results were inconsistent with a number of studies performed elsewhere, indicating that locally conducted studies are imperative to assessing whether this double burden of noise exposure and low socioeconomic status exists in other contexts. The primary implication of our study is that noise exposure represents an environmental injustice in Montreal, which is an issue that merits both investigation and concern.

Show MeSH
Related in: MedlinePlus