Grey literature excluded

This problem is addressed in AMSTAR 1 (Q4), AMSTAR 2 (Q4), ROBIS (P2 D1) and MECIR (C12 & C28). Grey literature or unpublished studies such as clinical trial reports, registry data, and conference proceedings should be considered for inclusion in systematic reviews in order to address publication bias, in which positive or significant results tend to be submitted and accepted for publication, can make treatments appear more effective than they are.

Articles that support this problem:

Assessing the methodological quality of systematic reviews in radiation oncology: A systematic review

2017 : Cancer epidemiology

Methodologic quality of systematic reviews published in the plastic and reconstructive surgery literature: a systematic review

2016 : Plastic and reconstructive surgery

Methodological quality and descriptive characteristics of prosthodonticā€related systematic reviews

2013 : Journal of oral rehabilitation

Methodological quality of systematic reviews published in the urological literature from 1998 to 2012

2015 : The journal of urology

The landscape of systematic reviews in urology (1998 to 2015): an assessment of methodological quality

2017 : Bju international

Assessment of the methodological quality of systematic reviews published in the urological literature from 1998 to 2008

2010 : The journal of urology

The currency, completeness and quality of systematic reviews of acute management of moderate to severe traumatic brain injury: A comprehensive evidence map

2018 : Plos one [electronic resource]

Quality assessment of systematic reviews of health care interventions using AMSTAR

2011 : Indian pediatrics

Epidemiology and Reporting Characteristics of Systematic Reviews of Biomedical Research: A Cross-Sectional Study

2016 : Plos medicine

Evaluation of methodology and quality characteristics of systematic reviews in orthodontics

2011 : Orthodontics & craniofacial research

The quality of systematic reviews addressing peripheral nerve repair and reconstruction

2019 : Journal of plastic, reconstructive & aesthetic surgery: jpras

Prostate Artery Embolisation: Poor Design and Reporting Impact the Value of Current Systematic Reviews

2018 : European urology

Systematic reviews and meta-analyses of home telemonitoring interventions for patients with chronic diseases: a critical assessment of their methodological quality

2013 : Journal of medical internet research

Quality assessment of systematic reviews on periodontal regeneration in humans

2013 : Journal of periodontology

Cochrane systematic reviews for the mental health field: is the gold standard tarnished?

2013 : Psychiatric services

Synthesizing and Appraising the Quality of the Evidence on Factors Associated with Medication Adherence in Diabetes: A Systematic Review of Systematic Reviews

2017 : Value in health regional issues

Reporting and methodological quality of systematic reviews in the orthopaedic literature

2013 : Jbjs

Critical appraisal of systematic reviews on the effect of a history of periodontitis on dental implant loss

2013 : Journal of clinical periodontology

The methodological quality of systematic reviews and meta-analyses on the effectiveness of non-pharmacological cancer pain management

2015 : Pain management nursing

Systematic reviews that include only published data may overestimate the effectiveness of analgesic medicines for low back pain: a systematic review and meta-analysis

2020 : Journal of clinical epidemiology

Reviews may overestimate the effectiveness of medicines for back pain: systematic review and meta-analysis

2019 : Journal of clinical epidemiology

Inadequate diversity of information resources searched in US-affiliated systematic reviews and meta-analyses: 2005-2016

2018 : Journal of clinical epidemiology

Quality assessment of systematic reviews on alveolar ridge preservation

2013 : Journal of the american dental association

Systematic reviews supporting practice guideline recommendations lack protection against bias

2013 : Journal of clinical epidemiology

Can trial quality be reliably assessed from published reports of cancer trials: evaluation of risk of bias assessments in systematic reviews

2013 : Bmj

The association between periodontitis and coronary heart disease: a quality assessment of systematic reviews

2013 : Journal of the american dental association

Effect of reporting bias on meta-analyses of drug trials: reanalysis of meta-analyses

2012 : Bmj

Quality Assessment of Systematic Review of the Bariatric Surgery for Diabetes Mellitus

2019 : Journal of diabetes research

DPP-4 inhibitors for the treatment of type 2 diabetes: a methodology overview of systematic reviews

2019 : Acta diabetologica

The methodological quality of systematic reviews of animal studies in dentistry

2012 : The veterinary journal

Impact of inclusion of industry trial results registries as an information source for systematic reviews

2014 : Plos one

Epidemiology, quality and reporting characteristics of systematic reviews of traditional Chinese medicine interventions published in Chinese journals

2011 : Plos one

Chinese herbal medicine for the treatment of primary hypertension: a methodology overview of systematic reviews

2016 : Systematic reviews

Search for unpublished data by systematic reviewers: an audit

2017 : Bmj open

Importance and methods of searching for E-publications ahead of print in systematic reviews

2016 : Evidence based medicine

A quality assessment of systematic reviews on telerehabilitation: what does the evidence tell us?

2015 : Annali dell'istituto superiore di sanita

Searching practices and inclusion of unpublished studies in systematic reviews of diagnostic accuracy

2020 : Research synthesis methods

Quality Assessment of Systematic Reviews of Temporomandibular Joint Ankylosis Surgical Treatment Outcomes

2020 : Journal of contemporary dental practice

Grey literature in systematic reviews: a cross-sectional study of the contribution of non-English reports, unpublished studies and dissertations to the results of meta-analyses in child-relevant reviews

2017 : Bmc medical research methodology

Systematic review adherence to methodological or reporting quality

2017 : Systematic reviews

Non-communicable diseases research output in the Eastern Mediterranean region: an overview of systematic reviews

2020 : Bmc medical research methodology

Most systematic reviews of adverse effects did not include unpublished data

2016 : Journal of clinical epidemiology

The search and selection for primary studies in systematic reviews published in dental journals indexed in MEDLINE was not fully reproducible

2018 : Journal of clinical epidemiology

Compliance of systematic reviews in veterinary journals with Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) literature search reporting guidelines

2017 : Journal of the medical library association: jmla

Peer Reviewed: Quality of Systematic Reviews of Observational Nontherapeutic Studies

2010 : Preventing chronic disease

Systematic reviews published in emergency medicine journals do not routinely search clinical trials registries: a cross-sectional analysis

2015 : Annals of emergency medicine

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 : Bmj open

Survey of the reporting characteristics of systematic reviews in rehabilitation

2013 : Physical therapy

Methodological quality and reporting of systematic reviews in hand and wrist pathology

2017 : Journal of hand surgery (european volume)

Systematic reviews in dentistry: Current status, epidemiological and reporting characteristics

2019 : Journal of dentistry

Characteristics and quality of systematic reviews and meta-analyses of observational nutritional epidemiology: a cross-sectional study

2021 : American journal of clinical nutrition

Photodynamic therapy for root canal disinfection in endodontics: an umbrella review

2022 : Lasers in medical science

Trial Registry Searches in Plastic Surgery Systematic Reviews: A Meta-epidemiological Study

2023 : Journal of surgical research

The Quality of Literature Search Reporting in Systematic Reviews Published in the Urological Literature (1998-2021)

2023 : Journal of urology