2022
Agreement of treatment effects from observational studies and randomized controlled trials evaluating hydroxychloroquine, lopinavir-ritonavir, or dexamethasone for covid-19: meta-epidemiological study
Moneer O, Daly G, Skydel JJ, Nyhan K, Lurie P, Ross JS, Wallach JD. Agreement of treatment effects from observational studies and randomized controlled trials evaluating hydroxychloroquine, lopinavir-ritonavir, or dexamethasone for covid-19: meta-epidemiological study. The BMJ 2022, 377: e069400. PMID: 35537738, PMCID: PMC9086409, DOI: 10.1136/bmj-2021-069400.Peer-Reviewed Original ResearchConceptsCOVID-19 treatmentObservational studyMeta-epidemiological studyEfficacy outcomesLopinavir-ritonavirLiving reviewTreatment effectsCOVID-19 treatment guidelinesSame interventionCOVID-19Continuous outcomesMeta-analyze evidenceTrial sequential analysisSummary treatment effectsDistribution of sexTreatment guidelinesIndividual RCTsSelection of studiesEvidence DatabasePlacebo comparatorClinical dataStudy demographicsRCTsDichotomous outcomesTherapeutic interventions
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 ResearchConceptsPostapproval 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