2025
Nonparametric Estimation of the Potential Impact Fraction and the Population Attributable Fraction With Individual‐Level and Aggregated Data
Chan C, Zepeda‐Tello R, Camacho‐García‐Formentí D, Cudhea F, Meza R, Rodrigues E, Spiegelman D, Barrientos‐Gutierrez T, Zhou X. Nonparametric Estimation of the Potential Impact Fraction and the Population Attributable Fraction With Individual‐Level and Aggregated Data. Statistics In Medicine 2025, 44: e70214. PMID: 40798868, DOI: 10.1002/sim.70214.Peer-Reviewed Original ResearchConceptsDistributional assumptionsFinite sample performanceImpact of distributional assumptionsPotential impact fractionNonparametric estimationSample performanceDistributional violationsPopulation attributable fractionImpact fractionNonparametric methodsSimulation studyContinuous exposure dataPopulation impact fractionsAttributable fractionSugar-sweetened beverage consumptionIncidence of type 2 diabetesAssumptionsExposure distributionEstimationAggregate dataBeverage consumptionNonparametricType 2 diabetesIndividual-levelTarget populationStatistical methods for cost-effectiveness analysis of left-truncated and right-censored survival data with treatment delays
Khudyakov P, Xu L, Yang C, Spiegelman D, Wang M. Statistical methods for cost-effectiveness analysis of left-truncated and right-censored survival data with treatment delays. Journal Of The Royal Statistical Society Series C (Applied Statistics) 2025, qlaf035. DOI: 10.1093/jrsssc/qlaf035.Peer-Reviewed Original ResearchIncremental net benefitExcellent finite sample propertiesRight-censored survival dataCost-effectiveness analysisFinite sample propertiesIncremental cost-effectiveness ratioExtensive simulation studyLeft-truncatedSample propertiesSimulation studyNet benefitsSurvival dataCost-effectiveness ratioHealth settingsSwitching treatmentDelay scenariosEstimationPublic health settingsTreatment initiationDelayInferenceStatistical methods
1989
Correction of logistic regression relative risk estimates and confidence intervals for systematic within‐person measurement error
Rosner B, Willett WC, Spiegelman D. Correction of logistic regression relative risk estimates and confidence intervals for systematic within‐person measurement error. Statistics In Medicine 1989, 8: 1051-1069. PMID: 2799131, DOI: 10.1002/sim.4780080905.Peer-Reviewed Original ResearchConceptsLikelihood approximation methodApproximation methodLinear approximation methodSecond-order Taylor series expansionTaylor series expansionEstimation of lambdaMeasurement errorCoverage probabilitySeries expansionLikelihood estimationTrue odds ratioSimulation studyPerson measurement errorSystematic errorsRegression coefficientsErrorCoefficient betaCoefficient lambdaEstimationLogistic regression coefficientsLogistic functionEstimatesTrue exposure
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