2020
Evaluation of confounding in epidemiologic studies assessing alcohol consumption on the risk of ischemic heart disease
Wallach JD, Serghiou S, Chu L, Egilman AC, Vasiliou V, Ross JS, Ioannidis JPA. Evaluation of confounding in epidemiologic studies assessing alcohol consumption on the risk of ischemic heart disease. BMC Medical Research Methodology 2020, 20: 64. PMID: 32171256, PMCID: PMC7071725, DOI: 10.1186/s12874-020-0914-6.Peer-Reviewed Original ResearchMeSH KeywordsAlcohol DrinkingEpidemiologic StudiesHumansMyocardial IschemiaReproducibility of ResultsConceptsIschemic heart disease riskHeart disease riskObservational studyImpact of alcoholPotential confoundersHeart diseaseDisease riskMultivariate modelIschemic heart diseaseResidual confoundingDisease relationshipsEpidemiologic studiesAlcohol consumptionConfoundersMultivariate analysisLack of consensusIndividual studiesStratification variablesDiseaseRiskSame exposureConfoundingDifferent studiesStudy findingsDifferent investigatorsVibration of effects in epidemiologic studies of alcohol consumption and breast cancer risk
Chu L, Ioannidis JPA, Egilman AC, Vasiliou V, Ross JS, Wallach JD. Vibration of effects in epidemiologic studies of alcohol consumption and breast cancer risk. International Journal Of Epidemiology 2020, 49: 608-618. PMID: 31967637, PMCID: PMC7266551, DOI: 10.1093/ije/dyz271.Peer-Reviewed Original ResearchMeSH KeywordsAlcohol DrinkingBreast NeoplasmsEpidemiologic StudiesFemaleHumansMeta-Analysis as TopicObservational Studies as TopicRiskConceptsObservational studyRelative effect estimatesImpact of alcoholEffect estimatesExposure definitionAlcohol-breast cancer relationshipDifferent exposure definitionsBreast cancer riskVibration of effectsRelative risk estimatesMost observational studiesAdjustment covariatesCancer relationshipEligible studiesBreast cancerStudy populationEpidemiologic studiesCancer riskSmaller effect estimatesAlcohol consumptionRisk estimatesContrast levelsSame associationStability of findingsOne-third
2019
Age-treatment subgroup analyses in Cochrane intervention reviews: a meta-epidemiological study
Liu P, Ioannidis JPA, Ross JS, Dhruva SS, Luxkaranayagam AT, Vasiliou V, Wallach JD. Age-treatment subgroup analyses in Cochrane intervention reviews: a meta-epidemiological study. BMC Medicine 2019, 17: 188. PMID: 31639007, PMCID: PMC6805640, DOI: 10.1186/s12916-019-1420-8.Peer-Reviewed Original ResearchConceptsCochrane intervention reviewsFormal interaction testingSubgroup analysisIntervention reviewsClinical practice resourcesInsufficient trial dataPotential subgroup differencesMeta-epidemiological studyIndividual subgroup analysisCochrane reviewAppropriate statistical testsClinical significanceClinical careSubgroup findingsTrial dataClinical resourcesHealthcare interventionsBiological rationaleAnalysis of ageTrialsIndividual trialsDemographic characteristicsPractice resourcesSubgroup differencesClinical translation
2018
Comparison of treatment effect sizes from pivotal and postapproval trials of novel therapeutics approved by the FDA based on surrogate markers of disease: a meta-epidemiological study
Wallach JD, Ciani O, Pease AM, Gonsalves GS, Krumholz HM, Taylor RS, Ross JS. Comparison of treatment effect sizes from pivotal and postapproval trials of novel therapeutics approved by the FDA based on surrogate markers of disease: a meta-epidemiological study. BMC Medicine 2018, 16: 45. PMID: 29562926, PMCID: PMC5863466, DOI: 10.1186/s12916-018-1023-9.Peer-Reviewed Original ResearchMeSH KeywordsBiomarkersDrug ApprovalEpidemiologic StudiesHumansTreatment OutcomeUnited StatesUnited States Food and Drug AdministrationConceptsPostapproval trialsPivotal trialsActual clinical effectSurrogate markerTrial endpointsLarge treatment effectsPrimary endpointNovel therapeuticsNovel drugsTreatment effectsFDA approvalPatient-relevant outcomesMeta-epidemiological studyStandardized mean differenceTreatment effect sizeClinical effectsResultsBetween 2005Odds ratioDrug trialsSame indicationDrug AdministrationEvidence of differencesMean differenceU.S. FoodDisease