The mortality due to PM 2.5 from buses

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Scope

Number of premature deaths due to PM 2.5 from buses in Helsinki Metropolitan Area in 2020 R↻

Definition

Data

• mortality due to cardiopulmonary, lung cancer and other causes,
• exposure to road traffic PM 2.5,
• the fraction of bus exposure of total road traffic exposure

Causality

• effect of bus type on PM 2.5 emissions and exposure,D↷
• relationship between the exposure of PM 2.5 and mortality effects

Unit

Estimated deaths per year associated with primary PM 2.5

Formula

deltaM = Mb(eexp(bdeltaE)-1)

• b = dose-response coefficient
• deltaE = change in exposure
• Mb = background mortalityR↻

Results

The mortality due to primary fine particles from buses ranged from 3 to 18 cases per year in the different bus strategies in 2020.