Challenges of identifying unpublished data from clinical trials: Getting the best out of clinical trials registers and other novel sources

Association of Trial Registration With Reporting of Primary Outcomes in Protocols and Publications

(2017) An-Wen Chan et al.   JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION

Pharmaceutical companies’ policies on access to trial data, results, and methods: audit study

(2017) Ben Goldacre et al.   BMJ-British Medical Journal

You can now search FDA approval documents easily at fda.opentrials.net

(2017) Ben Goldacre et al.   BMJ-British Medical Journal

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

(2017) Marie Baudard et al.   BMJ-British Medical Journal

Pharmaceutical companies’ policies on access to trial data, results, and methods: audit study

(2017) Ben Goldacre et al.   BMJ-British Medical Journal

You can now search FDA approval documents easily at fda.opentrials.net

(2017) Ben Goldacre et al.   BMJ-British Medical Journal

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

(2017) Marie Baudard et al.   BMJ-British Medical Journal

Public availability of results of observational studies evaluating an intervention registered at ClinicalTrials.gov

(2016) Marie Baudart et al.   BMC Medicine

Developing timely insights into comparative effectiveness research with a text-mining pipeline

(2016) Meiping Chang et al.   DRUG DISCOVERY TODAY

Clinical Trial Information Mediator

(2016) Christian Krauth et al.   JOURNAL OF BIOMEDICAL INFORMATICS

Comparison of Registered and Published Primary Outcomes in Randomized Controlled Trials of Orthopaedic Surgical Interventions

(2016) Jan J. Rongen et al.   JOURNAL OF BONE AND JOINT SURGERY-AMERICAN VOLUME

Research Techniques Made Simple: Workflow for Searching Databases to Reduce Evidence Selection Bias in Systematic Reviews

(2016) Laurence Le Cleach et al.   JOURNAL OF INVESTIGATIVE DERMATOLOGY

OpenTrials: towards a collaborative open database of all available information on all clinical trials

(2016) Ben Goldacre et al.   Trials

Discrepancies Between Randomized Controlled Trial Registry Entries and Content of Corresponding Manuscripts Reported in Anesthesiology Journals

(2015) Gildasio S. De Oliveira et al.   ANESTHESIA AND ANALGESIA

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

(2015) Christopher W. Jones et al.   BMC Medicine

Comparison of serious adverse events posted at ClinicalTrials.gov and published in corresponding journal articles

(2015) Eve Tang et al.   BMC Medicine

The Food and Drug Administration reports provided more data but were more difficult to use than the European Medicines Agency reports

(2015) Jeppe Bennekou Schroll et al.   JOURNAL OF CLINICAL EPIDEMIOLOGY

Aggregator: A machine learning approach to identifying MEDLINE articles that derive from the same underlying clinical trial

(2015) Weixiang Shao et al.   METHODS

Compliance with Results Reporting at ClinicalTrials.gov

(2015) Monique L. Anderson et al.   NEW ENGLAND JOURNAL OF MEDICINE

Clinical Trials Registries For Systematic Reviews – An Alternative Source For Unpublished Data

(2015) N.J. Halfpenny et al.   VALUE IN HEALTH

Trends in global clinical trial registration: an analysis of numbers of registered clinical trials in different parts of the world from 2004 to 2013

(2015) Roderik F Viergever et al.   BMJ Open

Information on new drugs at market entry: retrospective analysis of health technology assessment reports versus regulatory reports, journal publications, and registry reports

(2015) M. Kohler et al.   BMJ-British Medical Journal

Information on new drugs at market entry: retrospective analysis of health technology assessment reports versus regulatory reports, journal publications, and registry reports

(2015) M. Kohler et al.   BMJ-British Medical Journal

Using ClinicalTrials.gov to Supplement Information in Ophthalmology Conference Abstracts about Trial Outcomes: A Comparison Study

(2015) Roberta W. Scherer et al.   PLoS One

Reporting Discrepancies Between the ClinicalTrials.gov Results Database and Peer-Reviewed Publications

(2014) Daniel M. Hartung et al.   ANNALS OF INTERNAL MEDICINE

Reporting of Results in ClinicalTrials.gov and High-Impact Journals

(2014) Jessica E. Becker et al.   JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION

Clustering clinical trials with similar eligibility criteria features

(2014) Tianyong Hao et al.   JOURNAL OF BIOMEDICAL INFORMATICS

Clinical Trial Registration in Oral Health Journals

(2014) V. Smaïl-Faugeron et al.   JOURNAL OF DENTAL RESEARCH

Characteristics of clinical trial websites: information distribution between ClinicalTrials.gov and 13 primary registries in the WHO registry network

(2014) Daisuke Ogino et al.   Trials

Benefits and harms in clinical trials of duloxetine for treatment of major depressive disorder: comparison of clinical study reports, trial registries, and publications

(2014) E. Maund et al.   BMJ-British Medical Journal

Comparison of Randomized Controlled Trial Registry Entries and Content of Reports in Surgery Journals

(2013) Rachel Rosenthal et al.   ANNALS OF SURGERY

Comparison of Registered and Published Primary Outcomes in Randomized Clinical Trials of Surgical Interventions

(2013) Gerjon Hannink et al.   ANNALS OF SURGERY

Registration Rates, Adequacy of Registration, and a Comparison of Registered and Published Primary Outcomes in Randomized Controlled Trials Published in Surgery Journals

(2013) Shane Killeen et al.   ANNALS OF SURGERY

ClinicalTrials.gov registration can supplement information in abstracts for systematic reviews: a comparison study

(2013) Roberta W Scherer et al.   BMC Medical Research Methodology

US Food and Drug Administration documents can provide unpublished evidence relevant to systematic reviews

(2013) Marian S. McDonagh et al.   JOURNAL OF CLINICAL EPIDEMIOLOGY

How Should We Interrogate the ClinicalTrials.gov Database?

(2013) Steve N. Quessy   JOURNAL OF PAIN

Evaluating adherence to the International Committee of Medical Journal Editors' policy of mandatory, timely clinical trial registration

(2013) Vojtech Huser et al.   JOURNAL OF THE AMERICAN MEDICAL INFORMATICS ASSOCIATION

Haphazard reporting of deaths in clinical trials: a review of cases of ClinicalTrials.gov records and matched publications–a cross-sectional study

(2013) Amy Earley et al.   BMJ Open

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

(2013) Peter Doshi et al.   BMJ Open

Searching for unpublished data for Cochrane reviews: cross sectional study

(2013) J. B. Schroll et al.   BMJ-British Medical Journal

Completeness of Reporting of Patient-Relevant Clinical Trial Outcomes: Comparison of Unpublished Clinical Study Reports with Publicly Available Data

(2013) Beate Wieseler et al.   PLOS MEDICINE

Publication of Sports Medicine–Related Randomized Controlled Trials Registered in ClinicalTrials.gov

(2012) Jaskarndip Chahal et al.   AMERICAN JOURNAL OF SPORTS MEDICINE

The Imperative to Share Clinical Study Reports: Recommendations from the Tamiflu Experience

(2012) Peter Doshi et al.   PLOS MEDICINE

The ClinicalTrials.gov Results Database — Update and Key Issues

(2011) Deborah A. Zarin et al.   NEW ENGLAND JOURNAL OF MEDICINE

Result Publication of Chinese Trials in World Health Organization Primary Registries

(2010) Liu Xuemei et al.   PLoS One