Protocol for a systematic review on the extent of non-publication of research studies and associated study characteristics
Portalupi S, von Elm E, Schmucker C, Lang B, Motschall E, Schwarzer G, Gross IT, Scherer RW, Bassler D, Meerpohl JJ. Protocol for a systematic review on the extent of non-publication of research studies and associated study characteristics. Systematic Reviews 2013, 2: 2. PMID: 23302739, PMCID: PMC3577647, DOI: 10.1186/2046-4053-2-2.Peer-Reviewed Original ResearchConceptsStudy characteristicsSystematic reviewFull publicationElectronic database searchCohort of studiesResearch Ethics Committee approvalEthics committee approvalNon-published studiesTrials RegistryInclusion criteriaMethodsAs partCurrent evidenceMethodological research projectsReference listsCommittee approvalContact expertsPublication biasHealthcare professionalsConsumers of healthcareRate of publicationData synthesisRegistryDatabase searchAssociationApproval