What does this research mean for the field?

A 1 μg/m³ increase in PM2.5 levels in South Korea causes a 0.17% rise in older adult mortality and a 5.1% increase in respiratory hospitalizations, translating to substantial economic costs. Novelty: ClaimNovelty.CONFIRMATORY. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

Quantify the causal impact of fine particulate matter on mortality and morbidity and evaluate the economic value of air quality improvements.

September 8, 2026BMC Public HealthOpen Access

Mortality and morbidity consequences of particulate matter in South Korea: evidence from transboundary air pollution

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Authors

OKOsung KwonKorea Rural Economic Institute TKTaehyun KimKorea Rural Economic Institute

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Implication

Instrumental variable analysis demonstrates that particulate matter elevates mortality and respiratory admissions in older adults, highlighting substantial economic benefits from cleaner air.

Key Points

Quantify the causal impact of fine particulate matter on mortality and morbidity and evaluate the economic value of air quality improvements.
Analyzed air quality, mortality, and hospital admission data in South Korea from 2015 to 2022.
Applied an instrumental variable model using wind direction indicators combined with upwind air pollution levels from China to resolve endogeneity.
Estimated life-years lost to quantify the economic value of prevented premature deaths.
Each 1 μg/m³ increase in PM2.5 drove a 0.17% rise in mortality among adults aged 65 and older and a 5.1% increase in respiratory hospitalizations.
A 1 μg/m³ rise in PM2.5 increased hospital visits by 1.2% for acute upper respiratory infections and 2.6% for lower respiratory infections.
The 5.58 μg/m³ reduction in PM2.5 achieved between 2015 and 2022 yielded an estimated USD 14.14 billion in annual benefits based on avoided life-years lost.

Cite This Study

Kwon et al. (2026) studied this question.

synapsesocial.com/papers/6a9fd70a58e84d0ff5b4593c https://doi.org/10.1186/s12889-026-29307-8

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Implication

Instrumental variable analysis demonstrates that particulate matter elevates mortality and respiratory admissions in older adults, highlighting substantial economic benefits from cleaner air.

Mortality and morbidity consequences of particulate matter in South Korea: evidence from transboundary air pollution

Discussion

Member takes

Implication

Key Points

Cite This Study

Mortality and morbidity consequences of particulate matter in South Korea: evidence from transboundary air pollution

Discussion

Member takes

Implication

Key Points

Cite This Study

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