2025
Time-to-event analysis of preterm birth accounting for gestational age uncertainties
Zhang Y, Warren J, Hao H, Chang H. Time-to-event analysis of preterm birth accounting for gestational age uncertainties. The Annals Of Applied Statistics 2025, 19: 2155-2170. DOI: 10.1214/25-aoas2040.Peer-Reviewed Original ResearchTime-varying exposureTime-to-event analysisMCMC algorithmGestational agePreterm birthSimulation studyConvergence assessmentObstetric estimateThird trimesterHealth effect estimatesPreterm birth risk factorsLMP-based gestational ageOverall preterm birth rateBirth risk factorsRisk of preterm birthPopulation-based studyThird trimester of pregnancyJoint estimationAnalysis of preterm birthGestational age misclassificationPreterm birth rateDiscrete-time hazard modelsTrimester of pregnancyOutcome misclassificationSupplementary materials
2024
Influenza Activity and Preterm Birth in the Atlanta Metropolitan Area: A Time-Series Analysis from 2010 to 2017
Zheng X, Wang T, Hao H, D’Souza R, Strickland M, Warren J, Darrow L, Chang H. Influenza Activity and Preterm Birth in the Atlanta Metropolitan Area: A Time-Series Analysis from 2010 to 2017. Epidemiology 2024, 36: 141-148. PMID: 39588975, PMCID: PMC11785485, DOI: 10.1097/ede.0000000000001819.Peer-Reviewed Original ResearchInfluenza-like illnessExposure lagTest positivityPreterm birthPregnant peopleRisk of adverse birth outcomesIncreased risk of adverse birth outcomesInfluenza activityAssociated with increased risk of preterm birthInterquartile range increaseAdverse birth outcomesTime-varying confoundersComposite measureRisk of preterm birthShort-term associationsAssociated with increased riskPublic health burdenPoisson log-linear modelSymptoms of influenza-like illnessEstimate associationsBirth outcomesEffect modificationAnnual influenza epidemicsRange increaseMaternal characteristicsExposure range matters: considering nonlinear associations in the meta-analysis of environmental pollutant exposure using examples of per- and polyfluoroalkyl substances and birth outcomes
Guo P, Warren J, Deziel N, Liew Z. Exposure range matters: considering nonlinear associations in the meta-analysis of environmental pollutant exposure using examples of per- and polyfluoroalkyl substances and birth outcomes. American Journal Of Epidemiology 2024, 194: 1043-1051. PMID: 39227151, DOI: 10.1093/aje/kwae309.Peer-Reviewed Original ResearchNon-linear associationMeta-analysisHeterogeneity of effect estimatesEffect estimatesPotential non-linear associationsExposure-outcome relationshipsRisk of preterm birthSubgroup meta-analysisBirth outcomesPollution exposureMeta-analytic approachMeta-analysesEffect sizeEnvironmental pollutant exposureResults heterogeneityExposure levelsHealth effectsPreterm birthEvidence-based policymakingPrenatal exposurePotential heterogeneityMean birth weightBirth weightMethodological challengesCut-off choice
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