Some data quality issues at ClinicalTrials.gov

Prevalence of clinical trial status discrepancies: A cross-sectional study of 10,492 trials registered on both ClinicalTrials.gov and the European Union Clinical Trials Register

(2018) Jessica Fleminger et al.   PLoS One

Adherence to the International Committee of Medical Journal Editors’ (ICMJE) prospective registration policy and implications for outcome integrity: a cross-sectional analysis of trials published in high-impact specialty society journals

(2018) Anand D. Gopal et al.   Trials

Half of all European clinical trials break rules on reporting results within a year

(2018) Jacqui Wise   BMJ-British Medical Journal

ClinicalTrials.gov, stem cells and ‘pay-to-participate’ clinical studies

(2017) Leigh Turner   Regenerative Medicine

Current globalization of drug interventional clinical trials: characteristics and associated factors, 2011–2013

(2017) Sohyun Jeong et al.   Trials

Measuring clinical trial transparency: an empirical analysis of newly approved drugs and large pharmaceutical companies

(2017) Jennifer E Miller et al.   BMJ Open

Data Sharing Statements for Clinical Trials: A Requirement of the International Committee of Medical Journal Editors

(2017) Darren B. Taichman et al.   PLOS MEDICINE

An Analysis of Sponsors/Collaborators of 69,160 Drug Trials Registered with ClinicalTrials.gov

(2016) Shruthi Muralidharan Keezhupalat et al.   PLoS One

Terminated Trials in the ClinicalTrials.gov Results Database: Evaluation of Availability of Primary Outcome Data and Reasons for Termination

(2015) Rebecca J. Williams et al.   PLoS One

Unsuccessful trial accrual and human subjects protections: An empirical analysis of recently closed trials

(2014) Benjamin Carlisle et al.   Clinical Trials

Assessing the Impact of the NIH CTSA Program on Institutionally Sponsored Clinical Trials

(2013) Guodong Liu et al.   CTS-Clinical and Translational Science

Multiple imputation of missing values was not necessary before performing a longitudinal mixed-model analysis

(2013) Jos Twisk et al.   JOURNAL OF CLINICAL EPIDEMIOLOGY

Characteristics of Clinical Trials Registered in ClinicalTrials.gov, 2007-2010

(2012) Robert M. Califf   JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION

The Geographical Distribution of Leadership in Globalized Clinical Trials

(2012) Jarno Hoekman et al.   PLoS One

The Quality of Registration of Clinical Trials

(2011) Roderik F. Viergever et al.   PLoS One

Compliance of clinical trial registries with the World Health Organization minimum data set: a survey

(2009) Lorenzo P Moja et al.   Trials