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Traffic PM and nearby roads raised diabetes incidence
In the Heinz Nixdorf Recall cohort, living within 100 m of a busy road and higher total PM10 were associated with more new type 2 diabetes over ~5 years.
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Which cohort was analyzed?
The Heinz Nixdorf Recall Study in urban Germany.
Source: Long-term exposure to fine particulate matter and incidence of type 2 diabetes mellitus in a cohort study: effects of total and traffic-specific air pollution · DOI · quote verified
How many incident diabetes cases, over what follow-up?
331 cases over a mean 5.1 years.
Source: Long-term exposure to fine particulate matter and incidence of type 2 diabetes mellitus in a cohort study: effects of total and traffic-specific air pollution · DOI · quote verified
Mean total PM2.5 among participants?
16.7 μg/m³ (IQR 2.29).
Source: Long-term exposure to fine particulate matter and incidence of type 2 diabetes mellitus in a cohort study: effects of total and traffic-specific air pollution · DOI · quote verified
RR per IQR of total PM10?
1.20 (about a 20% higher incidence).
Source: Long-term exposure to fine particulate matter and incidence of type 2 diabetes mellitus in a cohort study: effects of total and traffic-specific air pollution · DOI · quote verified
Corresponding RR for total PM2.5 per IQR?
1.11 (95% CI 0.99–1.23).
Source: Long-term exposure to fine particulate matter and incidence of type 2 diabetes mellitus in a cohort study: effects of total and traffic-specific air pollution · DOI · quote verified
Diabetes RR for living within 100 m of a busy road?
1.37 versus living >200 m away.
Source: Long-term exposure to fine particulate matter and incidence of type 2 diabetes mellitus in a cohort study: effects of total and traffic-specific air pollution · DOI · quote verified
Per 1 μg/m³, how did traffic-specific PM compare with total PM?
Traffic-specific RRs were markedly higher (~1.36).
Source: Long-term exposure to fine particulate matter and incidence of type 2 diabetes mellitus in a cohort study: effects of total and traffic-specific air pollution · DOI · quote verified
What exposure model was new here?
A source-specific dispersion and chemistry-transport model for total vs traffic PM.
Source: Long-term exposure to fine particulate matter and incidence of type 2 diabetes mellitus in a cohort study: effects of total and traffic-specific air pollution · DOI · quote verified
How was a busy road defined?
More than 26,062 vehicles per day.
Source: Long-term exposure to fine particulate matter and incidence of type 2 diabetes mellitus in a cohort study: effects of total and traffic-specific air pollution · DOI · quote verified
Analytic sample size with complete covariates?
3,607 participants.
Source: Long-term exposure to fine particulate matter and incidence of type 2 diabetes mellitus in a cohort study: effects of total and traffic-specific air pollution · DOI · quote verified
What outcome was studied?
Cumulative incidence of type 2 diabetes.
Source: Long-term exposure to fine particulate matter and incidence of type 2 diabetes mellitus in a cohort study: effects of total and traffic-specific air pollution · DOI · quote verified