Practical guidance for using multiple data sources in systematic reviews and meta‐analyses (with examples from the <scp>MUDS</scp> study)

Preferred reporting items for systematic reviews and meta-analyses: the PRISMA statement

2009 • 78,446 citations

Preferred reporting items for systematic review and meta-analysis protocols (PRISMA-P) 2015: elaboration and explanation

2015 • 10,589 citations

Selective Publication of Antidepressant Trials and Its Influence on Apparent Efficacy

2008 • 2,344 citations

Systematic Review of the Empirical Evidence of Study Publication Bias and Outcome Reporting Bias — An Updated Review

2013 • 986 citations

Full publication of results initially presented in abstracts

2007 • 921 citations

Finding What Works in Health Care: Standards for Systematic Reviews

2013 • 888 citations

Meta-analysis of the literature or of individual patient data: is there a difference?

1993 • 752 citations

The ClinicalTrials.gov Results Database — Update and Key Issues

2011 • 727 citations

Impact of covert duplicate publication on meta-analysis: a case study

1997 • 689 citations

Trial Publication after Registration in ClinicalTrials.Gov: A Cross-Sectional Analysis

2009 • 385 citations

Outcome Reporting in Industry-Sponsored Trials of Gabapentin for Off-Label Use

2009 • 357 citations

Compliance with Results Reporting at ClinicalTrials.gov

2015 • 341 citations

Reporting Bias in Drug Trials Submitted to the Food and Drug Administration: Review of Publication and Presentation

2008 • 323 citations

Compliance with mandatory reporting of clinical trial results on ClinicalTrials.gov: cross sectional study

2012 • 282 citations

Trial Reporting in ClinicalTrials.gov — The Final Rule

2016 • 278 citations

Timing and Completeness of Trial Results Posted at ClinicalTrials.gov and Published in Journals

2013 • 232 citations

Comparison of registered and published outcomes in randomized controlled trials: a systematic review

2015 • 207 citations

Reporting of Adverse Events in Published and Unpublished Studies of Health Care Interventions: A Systematic Review

2016 • 202 citations

Update on Trial Registration 11 Years after the ICMJE Policy Was Established

2017 • 199 citations

Restoring invisible and abandoned trials: a call for people to publish the findings

2013 • 178 citations

Bias Due to Changes in Specified Outcomes during the Systematic Review Process

2010 • 150 citations

Toward a New Era of Trust and Transparency in Clinical Trials

2016 • 127 citations

Multiple outcomes and analyses in clinical trials create challenges for interpretation and research synthesis

2017 • 117 citations

Multiple publication of reports of drug trials

1989 • 111 citations

Publication Bias in Antipsychotic Trials: An Analysis of Efficacy Comparing the Published Literature to the US Food and Drug Administration Database

2012 • 106 citations

Methods for obtaining unpublished data

2011 • 105 citations

Impact of document type on reporting quality of clinical drug trials: a comparison of registry reports, clinical study reports, and journal publications

2012 • 103 citations

Cherry-picking by trialists and meta-analysts can drive conclusions about intervention efficacy

2017 • 97 citations

Impact of searching clinical trial registries in systematic reviews of pharmaceutical treatments: methodological systematic review and reanalysis of meta-analyses

2017 • 95 citations

Outcomes in Cochrane Systematic Reviews Addressing Four Common Eye Conditions: An Evaluation of Completeness and Comparability

2014 • 89 citations

Improving transparency and reproducibility through registration: The status of intervention trials published in clinical psychology journals.

2016 • 78 citations

Clinical study reports of randomised controlled trials: an exploratory review of previously confidential industry reports

2013 • 74 citations

Use of the National Heart, Lung, and Blood Institute Data Repository

2017 • 72 citations

Systematic reviewers commonly contact study authors but do so with limited rigor

2008 • 66 citations

Despite Law, Fewer Than One In Eight Completed Studies Of Drugs And Biologics Are Reported On Time On ClinicalTrials.gov

2011 • 61 citations

Data Sharing — Is the Juice Worth the Squeeze?

2016 • 53 citations

ClinicalTrials.gov and Drugs@FDA: A Comparison of Results Reporting for New Drug Approval Trials

2016 • 48 citations

A systematic review of the processes used to link clinical trial registrations to their published results

2017 • 46 citations

How to access and process FDA drug approval packages for use in research

2013 • 41 citations

Dependability of results in conference abstracts of randomized controlled trials in ophthalmology and author financial conflicts of interest as a factor associated with full publication

2016 • 31 citations

Are manufacturers sharing data as promised?

2015 • 26 citations

Most systematic reviews of adverse effects did not include unpublished data

2016 • 25 citations

Integrating multiple data sources (MUDS) for meta-analysis to improve patient-centered outcomes research: a protocol for a systematic review

2015 • 19 citations

Focus on sharing individual patient data distracts from other ways of improving trial transparency

2017 • 19 citations

Can We Depend on Investigators to Identify and Register Randomized Controlled Trials?

2012 • 17 citations

Outcomes in Cochrane systematic reviews related to wound care: An investigation into prespecification

2017 • 17 citations

Who Has Used Internal Company Documents for Biomedical and Public Health Research and Where Did They Find Them?

2014 • 11 citations

The European Medicines Agency and Publication of Clinical Study Reports

2017 • 10 citations

Effect of a once-daily gastroretentive formulation of gabapentin on the Brief Pain Inventory Scale scores in patients with postherpetic neuralgia

2012 • 1 citations