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Out of sight but not out of mind: how to search for unpublished clinical trial evidence
16 references·6 citing·46 second hop
Out of sight but not out of mind: how to search for unpublished clinical trial evidence (2012)Out of sight but not out of mind: how to …The Quality of Registration of Clinical Trials (2011)The Quality of Registration o…The Cochrane Collaboration's tool for assessing risk of bias in randomised trials (2011)The Cochrane Collaboration's …Frequency and reasons for outcome reporting bias in clinical trials: interviews with trialists (2011)Frequency and reasons for out…Completeness and Changes in Registered Data and Reporting Bias of Randomized Controlled Trials in ICMJE Journals after Trial Registration Policy (2011)Completeness and Changes in R…Applying the Risk of Bias Tool in a Systematic Review of Combination Long-Acting Beta-Agonists and Inhaled Corticosteroids for Persistent Asthma (2011)Applying the Risk of Bias Too…The quality of reports of randomised trials in 2000 and 2006: comparative study of articles indexed in PubMed (2010)The quality of reports of ran…Dissemination and publication of research findings: an updated review of related biases (2010)Dissemination and publication…Systematic Review of the Empirical Evidence of Study Publication Bias and Outcome Reporting Bias (2008)Systematic Review of the Empi…Discrepancies in sample size calculations and data analyses reported in randomised trials: comparison of publications with protocols (2008)Discrepancies in sample size …Cochrane Handbook for Systematic Reviews of Interventions (2008)Cochrane Handbook for Systema…Identifying outcome reporting bias in randomised trials on PubMed: review of publications and survey of authors (2005)Identifying outcome reporting…Empirical Evidence for Selective Reporting of Outcomes in Randomized Trials (2004)Empirical Evidence for Select…Implications of the Tobacco Industry Documents for Public Health and Policy (2003)Implications of the Tobacco I…Investigation of within‐study selective reporting in clinical research: follow‐up of applications submitted to a local research ethics committee (2002)Investigation of within‐study…Identifying relevant studies for systematic reviews (1995)Identifying relevant studies …Retrospective and Prospective Identification of Unpublished Controlled Trials: Lessons From a Survey of Obstetricians and Pediatricians (1989)Retrospective and Prospective…Reporting summary results in clinical trial registries: updated guidance from WHO (2025)Reporting summary results in …A Guide for Accounting Researchers to Conduct and Report Systematic Literature Reviews (2023)A Guide for Accounting Resear…SPIRIT 2013 Bildirisi: Klinik Deneyler İçin Standart Protokol Maddelerinin Tanımlanması (2021)SPIRIT 2013 Bildirisi: Klinik…Search for unpublished data by systematic reviewers: an audit (2017)Search for unpublished data b…Critical review of a scientific manuscript: a practical guide for reviewers (2017)Critical review of a scientif…How do authors of systematic reviews deal with research malpractice and misconduct in original studies? A cross-sectional analysis of systematic reviews and survey of their authors (2016)How do authors of systematic …Empirical evidence of bias. Dimensions of methodological quality associated with estimates of treatment effects in controlled trials (1995)Assessing the quality of reports of randomized clinical trials: Is blinding necessary? (1996)The CONSORT statement: revised recommendations for improving the quality of reports of parallel-group randomised trials (2001)Preferred Reporting Items for Systematic Reviews and Meta-Analyses: The PRISMA Statement (2009)The PRISMA 2020 statement: an updated guideline for reporting systematic reviews (2021)Bias in meta-analysis detected by a simple, graphical test (1997)Trim and Fill: A Simple Funnel‐Plot–Based Method of Testing and Adjusting for Publication Bias in Meta‐Analysis (2000)Measuring inconsistency in meta-analyses (2003)Reporting and Interpretation of Randomized Controlled Trials With Statistically Nonsignificant Results for Primary Outcomes (2010)PRISMA for Abstracts: Reporting Systematic Reviews in Journal and Conference Abstracts (2013)In meta-analyses of proportion studies, funnel plots were found to be an inaccurate method of assessing publication bias (2014)Improving the quality of reporting of randomized controlled trials. The CONSORT statement (1996)Assessing the quality of controlled clinical trials (2001)The Revised CONSORT Statement for Reporting Randomized Trials: Explanation and Elaboration (2001)CONSORT 2010 Statement (2010)CONSORT 2010 Statement: updated guidelines for reporting parallel group randomized trials. (2010)Effect of Preventive Interventions in Mentally Ill Parents on the Mental Health of the Offspring: Systematic Review and Meta-Analysis (2011)The CONSORT statement: revised recommendations for improving the quality of reports of parallel group randomized trials (2001)Evidence for the Selective Reporting of Analyses and Discrepancies in Clinical Trials: A Systematic Review of Cohort Studies of Clinical Trials (2014)Reducing bias, increasing transparency and calibrating confidence with preregistration (2023)SPIRIT 2025 explanation and elaboration: updated guideline for protocols of randomised trials (2025)Publication bias in clinical research (1991)Systematic Reviews in Health Care : Meta-Analysis in Context (2000)Publication Bias in Meta‐Analysis (2005)Choosing Prediction Over Explanation in Psychology: Lessons From Machine Learning (2017)The COMET Handbook: version 1.0 (2017)CINeMA: An approach for assessing confidence in the results of a network meta-analysis (2020)CONSORT 2010 Explanation and Elaboration: updated guidelines for reporting parallel group randomised trials (2010)Selective reporting bias of harm outcomes within studies: findings from a cohort of systematic reviews (2014)SPIRIT 2013 Statement: defining standard protocol items for clinical trials. (2015)Cochrane Handbook for Systematic Reviews of Interventions (2020)Meta-analyses involving cross-over trials: methodological issues (2002)Bias in Clinical Intervention Research (2006)Cognitive behavioural therapy for anxiety disorders in children and adolescents (2015)Acceptance and Commitment Therapy (ACT) for Chronic Pain (2016)The Cigarette Papers (1996)Tobacco industry documents: treasure trove or quagmire? (2000)Science and public policy: what’s proof got to do with it? (2004)Public Health Chronicles (2005)How does the alcohol industry attempt to influence marketing regulations? A systematic review (2015)QUADAS-2: A Revised Tool for the Quality Assessment of Diagnostic Accuracy Studies (2011)ROBINS-I: a tool for assessing risk of bias in non-randomised studies of interventions (2016)RoB 2: a revised tool for assessing risk of bias in randomised trials (2019)Trial sequential analysis may establish when firm evidence is reached in cumulative meta-analysis (2007)Contour-enhanced meta-analysis funnel plots help distinguish publication bias from other causes of asymmetry (2008)CONSORT 2010 Statement: updated guidelines for reporting parallel group randomised trials (2010)
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References

  • 2011The Cochrane Collaboration's tool for assessing risk of bias in randomised trials33,776 cited
  • 2008Cochrane Handbook for Systematic Reviews of Interventions25,045 cited
  • 2004Empirical Evidence for Selective Reporting of Outcomes in Randomized Trials1,845 cited
  • 2008Systematic Review of the Empirical Evidence of Study Publication Bias and Outcome Reporting Bias1,544 cited
  • 2010Dissemination and publication of research findings: an updated review of related biases1,039 cited
  • 2005Identifying outcome reporting bias in randomised trials on PubMed: review of publications and survey of authors612 cited
  • 2010The quality of reports of randomised trials in 2000 and 2006: comparative study of articles indexed in PubMed503 cited
  • 2003Implications of the Tobacco Industry Documents for Public Health and Policy303 cited
  • 2011Frequency and reasons for outcome reporting bias in clinical trials: interviews with trialists220 cited
  • 2008Discrepancies in sample size calculations and data analyses reported in randomised trials: comparison of publications with protocols201 cited
  • 1995Identifying relevant studies for systematic reviews174 cited
  • 2011The Quality of Registration of Clinical Trials150 cited
  • 1989Retrospective and Prospective Identification of Unpublished Controlled Trials: Lessons From a Survey of Obstetricians and Pediatricians124 cited

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2011
Completeness and Changes in Registered Data and Reporting Bias of Randomized Controlled Trials in ICMJE Journals after Trial Registration Policy
115 cited
  • 2002Investigation of within‐study selective reporting in clinical research: follow‐up of applications submitted to a local research ethics committee97 cited
  • 2011Applying the Risk of Bias Tool in a Systematic Review of Combination Long-Acting Beta-Agonists and Inhaled Corticosteroids for Persistent Asthma79 cited
  • Cited by

    • 2016How do authors of systematic reviews deal with research malpractice and misconduct in original studies? A cross-sectional analysis of systematic reviews and survey of their authors49 cited
    • 2023A Guide for Accounting Researchers to Conduct and Report Systematic Literature Reviews32 cited
    • 2017Search for unpublished data by systematic reviewers: an audit32 cited
    • 2025Reporting summary results in clinical trial registries: updated guidance from WHO24 cited
    • 2021SPIRIT 2013 Bildirisi: Klinik Deneyler İçin Standart Protokol Maddelerinin Tanımlanması17 cited
    • 2017Critical review of a scientific manuscript: a practical guide for reviewers12 cited