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Recommendations by Cochrane Review Groups for assessment of the risk of bias in studies
BackgroundAssessing the risk of bias in individual studies in a systematic review can be done using individual components or by summarizing the study quality in an overall score.MethodsWe examinedExpand
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Conflicts of Interest at Medical Journals: The Influence of Industry-Supported Randomised Trials on Journal Impact Factors and Revenue – Cohort Study
Andreas Lundh and colleagues investigated the effect of publication of large industry-supported trials on citations and journal income, through reprint sales, in six general medical journals
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Underreporting of conflicts of interest in clinical practice guidelines: cross sectional study
BackgroundConflicts of interest affect recommendations in clinical guidelines and disclosure of such conflicts is important. However, not all conflicts of interest are disclosed. Using a publicExpand
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Adequacy of authors’ replies to criticism raised in electronic letters to the editor: cohort study
Objective To investigate whether substantive criticism in electronic letters to the editor, defined as a problem that could invalidate the research or reduce its reliability, is adequately addressedExpand
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Coding of adverse events of suicidality in clinical study reports of duloxetine for the treatment of major depressive disorder: descriptive study
Objective To assess the effects of coding and coding conventions on summaries and tabulations of adverse events data on suicidality within clinical study reports. Design Systematic electronic searchExpand
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Benefits and harms in clinical trials of duloxetine for treatment of major depressive disorder: comparison of clinical study reports, trial registries, and publications
Objective To determine, using research on duloxetine for major depressive disorder as an example, if there are inconsistencies between protocols, clinical study reports, and main publicly availableExpand
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Under-reporting of conflicts of interest among trialists: a cross-sectional study
Objectives To determine the prevalence of conflicts of interest (COIs) among Danish physicians who are authors of clinical drug trial reports and determine the extent of undisclosed COIs in trialExpand
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Sponsors’ participation in conduct and reporting of industry trials: a descriptive study
BackgroundBias in industry-sponsored trials is common and the interpretation of the results can be particularly distorted in favour of the sponsor’s product. We investigated sponsors’ involvement inExpand
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International or national publication of case reports.
INTRODUCTION Case reports are often regarded as second-class research, but are an important part of medical science as they often present first evidence of new discoveries. We here describe the typeExpand
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