Effect modification of consecutive high concentration days on the association between fine particulate matter and mortality: a multi-city study in Korea.

Epidemiol Health · 2022 · PMC9754921 · PMID 35698445

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a decreasing trendno p-value reported

Although the background PM 2.5 concentration in Korea has shown a decreasing trend since these levels started to be measured in 2015 [ 10 ], prolonged exposure to a high concentration of PM 2.5 has frequently been observed.

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