2022
Comparison of Clinical Study Results Reported in medRxiv Preprints vs Peer-reviewed Journal Articles
Janda G, Khetpal V, Shi X, Ross J, Wallach J. Comparison of Clinical Study Results Reported in medRxiv Preprints vs Peer-reviewed Journal Articles. JAMA Network Open 2022, 5: e2245847. PMID: 36484989, PMCID: PMC9856222, DOI: 10.1001/jamanetworkopen.2022.45847.Peer-Reviewed Original ResearchConceptsPrimary end pointPrimary end point resultsPeer-reviewed journalsClinical studiesEnd pointClinical trialsObservational studyStudy characteristicsEnd point resultsClinical study resultsMost clinical studiesCross-sectional studyHealth-related outcomesSample sizeMAIN OUTCOMEPeer-reviewed publicationsMedRxivEffect estimatesStudy interpretationDiscordant pairsCOVID-19Trials
2021
Assessment of Concordance and Discordance Among Clinical Studies Posted as Preprints and Subsequently Published in High-Impact Journals
Shi X, Ross JS, Amancharla N, Niforatos JD, Krumholz HM, Wallach JD. Assessment of Concordance and Discordance Among Clinical Studies Posted as Preprints and Subsequently Published in High-Impact Journals. JAMA Network Open 2021, 4: e212110. PMID: 33734411, PMCID: PMC7974637, DOI: 10.1001/jamanetworkopen.2021.2110.Peer-Reviewed Original Research
2016
Characterisation of trials where marketing purposes have been influential in study design: a descriptive study
Barbour V, Burch D, Godlee F, Heneghan C, Lehman R, Perera R, Ross JS, Schroter S. Characterisation of trials where marketing purposes have been influential in study design: a descriptive study. Trials 2016, 17: 31. PMID: 26792624, PMCID: PMC4720997, DOI: 10.1186/s13063-015-1107-1.Peer-Reviewed Original ResearchConceptsMedian numberDrug trialsGeneral medical journalsComposite primary outcome measureStudy designTerms of blindingPrimary outcome measureTrials of drugsHigh-impact general medical journalsKey trial characteristicsIndustry-funded trialsMedical journalsAdverse eventsCategories of trialsTrial characteristicsOutcome measuresStudy populationSafety outcomesBlinded researcherStudy characteristicsDescriptive studyTrial documentationTrialsSignificant differencesMarketing trials