2025
Heat Waves and Early Birth: Exploring Vulnerability by Individual‐ and Area‐Level Factors
Fitch A, Huang M, Strickland M, Newman A, Kalb C, Warren J, Kelley S, Zheng X, Chang H, Darrow L. Heat Waves and Early Birth: Exploring Vulnerability by Individual‐ and Area‐Level Factors. GeoHealth 2025, 9: e2025gh001348. PMID: 40271078, PMCID: PMC12015208, DOI: 10.1029/2025gh001348.Peer-Reviewed Original ResearchZip code tabulation areasArea-level factorsEarly term birthSocial deprivationSocial deprivation indexHigh social deprivationTerm birthsCase-crossover designState vital recordsInverse-variance weightingDeprivation indexSocioeconomic disadvantageHealth outcomesMaternal residenceHeat wave exposureMaternal educationVital recordsExposure windowsOdds ratioArea levelIndividual-levelMaternal ageBirth riskPositive associationSchool education
2023
Associations between weekly gestational exposure of fine particulate matter, ozone, and nitrogen dioxide and preterm birth in a North Carolina Birth Cohort, 2003–2015
Krajewski A, Luben T, Warren J, Rappazzo K. Associations between weekly gestational exposure of fine particulate matter, ozone, and nitrogen dioxide and preterm birth in a North Carolina Birth Cohort, 2003–2015. Environmental Epidemiology 2023, 7: e278. PMID: 38912391, PMCID: PMC11189686, DOI: 10.1097/ee9.0000000000000278.Peer-Reviewed Original ResearchPreterm birthGestational exposureWeeks of pregnancyRisk of PTBInterquartile range increasePM 2.5 exposurePoisson regression modelsGestational weeksPotential confoundersFine particulate matterAssociation magnitudeRisk differenceNull associationBirth cohortExposure windowsResidential addressesMultipollutant modelsBirthWeeksPositive associationAssociationExposurePM 2.5Regression modelsCensus tracts
2015
Assessment of critical exposure and outcome windows in time-to-event analysis with application to air pollution and preterm birth study
Chang HH, Warren JL, Darrow LA, Reich BJ, Waller LA. Assessment of critical exposure and outcome windows in time-to-event analysis with application to air pollution and preterm birth study. Biostatistics 2015, 16: 509-521. PMID: 25572998, PMCID: PMC5963471, DOI: 10.1093/biostatistics/kxu060.Peer-Reviewed Original ResearchConceptsPreterm birthAir pollution exposureGestational air pollution exposureRisk of PTBPollution exposurePreterm Birth StudyCourse of pregnancyTime-varying exposureOngoing pregnancyBirth StudyGestational exposureReproductive epidemiologyWeek 30PregnancyWeekly exposureBirth recordsVulnerable periodPopulation studiesPositive associationCritical periodExposureInconsistent findingsAssociationExposure lengthFine particulate matter
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