Clinical trial registration was associated with lower risk of bias compared with non-registered trials among trials included in systematic reviews

Prospective registration and reporting of trial number in randomised clinical trials: global cross sectional study of the adoption of ICMJE and Declaration of Helsinki recommendations

(2020) Mustafa Al-Durra et al.   BMJ-British Medical Journal

The effect of the CONSORT statement on the amount of “unclear” Risk of Bias reporting in Cochrane Systematic Reviews

(2020) Maaike M. Rademaker et al.   PLoS One

Poor compliance of clinical trial registration among trials included in systematic reviews: a cohort study

(2020) Kristina Lindsley et al.   JOURNAL OF CLINICAL EPIDEMIOLOGY

Association between switching of primary outcomes and reported trial findings among randomized drug trials from China

(2020) Yuanxi Jia et al.   JOURNAL OF CLINICAL EPIDEMIOLOGY

Risk of bias assessment of randomised controlled trials referenced in the 2015 American Heart Association guidelines update for cardiopulmonary resuscitation and emergency cardiovascular care: a cross-sectional review

(2019) Yongil Cho et al.   BMJ Open

RoB 2: a revised tool for assessing risk of bias in randomised trials

(2019) Jonathan A C Sterne et al.   BMJ-British Medical Journal

Trial Registry Use in Surgery Systematic Reviews: A Cross-sectional Study

(2019) Harrison M. Gray et al.   JOURNAL OF SURGICAL RESEARCH

10-Year Update on Study Results Submitted to ClinicalTrials.gov

(2019) Deborah A. Zarin et al.   NEW ENGLAND JOURNAL OF MEDICINE

Registration of published randomized trials: a systematic review and meta-analysis

(2018) Ludovic Trinquart et al.   BMC Medicine

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

Registration, results reporting, and publication bias of clinical trials supporting FDA approval of neuropsychiatric drugs before and after FDAAA: a retrospective cohort study

(2018) Constance X. Zou et al.   Trials

Clinical trial registration was not an indicator for low risk of bias

(2017) Cynthia M. Farquhar et al.   JOURNAL OF CLINICAL EPIDEMIOLOGY

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

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

Is Mandatory Prospective Trial Registration Working to Prevent Publication of Unregistered Trials and Selective Outcome Reporting? An Observational Study of Five Psychiatry Journals That Mandate Prospective Clinical Trial Registration

(2015) Amelia Scott et al.   PLoS One

The Quality of Registration of Clinical Trials: Still a Problem

(2014) Roderik F. Viergever et al.   PLoS One

Trial registration in Latin America and the Caribbean’s: study of randomized trials published in 2010

(2012) Ludovic Reveiz et al.   JOURNAL OF CLINICAL EPIDEMIOLOGY

The Prevention and Treatment of Missing Data in Clinical Trials

(2012) Roderick J. Little et al.   NEW ENGLAND JOURNAL OF MEDICINE

CONSORT 2010 Statement: Updated Guidelines for Reporting Parallel Group Randomised Trials

(2010) Kenneth F. Schulz et al.   PLOS MEDICINE