2025
Disparities in NO2-related health burden prevalent across race-ethnicity and income groups in the United States
Chu L, Ma Y, Zang E, Huang L, Chen K. Disparities in NO2-related health burden prevalent across race-ethnicity and income groups in the United States. One Earth 2025, 101387. DOI: 10.1016/j.oneear.2025.101387.Peer-Reviewed Original ResearchHigh-income countiesRace-EthnicityNon-Hispanic black populationHealth burdenRacial-ethnic disparitiesRace-ethnic groupsIncome groupsLow-income countiesQuasi-Poisson regressionRacial-ethnic minoritiesMortality disparitiesUnited StatesHealthcare strategiesMortality burdenDescriptive statisticsRelative riskDisparitiesBlack populationNO2 exposureBurdenMortality rateCountyIncomeTargeted policiesMortalityJoint Exposure to Ozone and Temperature and Acute Myocardial Infarction Among Adults Aged 18 to 64 Years in the United States
Chu L, Wang R, Gross C, Wei J, Lu Y, Krumholz H, Ma X, Chen K. Joint Exposure to Ozone and Temperature and Acute Myocardial Infarction Among Adults Aged 18 to 64 Years in the United States. Circulation 2025, 152: 246-256. PMID: 40458867, PMCID: PMC12303734, DOI: 10.1161/circulationaha.124.073614.Peer-Reviewed Original ResearchIncident acute myocardial infarctionAcute myocardial infarctionIncreased oddsRisk of acute myocardial infarctionHigher risk of acute myocardial infarctionProbability of acute myocardial infarctionOccurrence of acute myocardial infarctionRandom-effects meta-analysisCase-crossover studyMultivariate random-effects meta-analysisExposure to ozoneRegion-specific estimatesMyocardial infarctionStatistical interaction termsAmbient ozone pollutionPrevention strategiesUnited StatesJoint exposureMeta-analysisAdult ageYoung adultsHigh riskAdultsOddsInteraction terms
2024
Long-term exposure to wildland fire smoke PM2.5 and mortality in the contiguous United States
Ma Y, Zang E, Liu Y, Wei J, Lu Y, Krumholz H, Bell M, Chen K. Long-term exposure to wildland fire smoke PM2.5 and mortality in the contiguous United States. Proceedings Of The National Academy Of Sciences Of The United States Of America 2024, 121: e2403960121. PMID: 39316057, PMCID: PMC11459178, DOI: 10.1073/pnas.2403960121.Peer-Reviewed Original ResearchConceptsWildland firesContiguous United StatesNonaccidental mortalityExposure to ambient fine particlesSmoke PMWildland fire smokeMoving average concentrationsAmbient fine particlesLong-term exposureAverage concentrationSmoke PMHealth risksFine particlesFire smokeTemporal confoundingHealth effectsKidney disease mortalityChronic kidney disease mortalityPublic health actionFireMortality rateUnited StatesDisease mortalityHealth actionsMortality outcomes
2023
Association of flooding exposure with cause-specific mortality in North Carolina, United States
Ban J, Sutton C, Ma Y, Lin C, Chen K. Association of flooding exposure with cause-specific mortality in North Carolina, United States. Nature Water 2023, 1: 1027-1034. DOI: 10.1038/s44221-023-00167-5.Peer-Reviewed Original ResearchCause-specific mortalityRelative riskAssociated with mortality riskAssociated with higher relative riskCounty-level estimatesTime series designTwo-stage time-series designHigher relative riskNorth CarolinaOlder adultsSeries designDeaths per yearMortality riskMental disordersUnited StatesAccidental mortalityNon-accidentalRisk increaseTotal deathHealth impactsCardiovascular diseaseCounty levelAssociationMortalityRespiratory disease
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