This problem is addressed in PRISMA 2009, PRISMA 2020, AMSTAR 1, AMSTAR 2 and MECIR. Systematic review authors should state the source of funding for the reviews and whether this is through a particular grant, institutional employment or a commercial sponsor. Reporting that the review was not supported by any funding or sponsor does not necessarily indicate that a systematic review is free from bias. Non-financial conflicts or researcher allegiances can mean that authors have a motive for publishing a systematic review which has no direct funding.
Articles that support this problem:
Quality of reporting of systematic reviews and meta-analyses of surgical randomized clinical trials
2020 : Bjs open
The quality of systematic reviews in hand surgery: An analysis using AMSTAR
2014 : Plastic and reconstructive surgery
Overall confidence in the results of systematic reviews on exercise therapy for chronic low back pain: a cross-sectional analysis using the Assessing the Methodological Quality of Systematic Reviews (AMSTAR) 2 tool
2020 : Brazilian journal of physical therapy
Methodological quality of systematic reviews published in the urological literature from 1998 to 2012
2015 : The journal of urology
Variable methodological quality and use found in systematic reviews referenced in STEMI clinical practice guidelines
2017 : The american journal of emergency medicine
Evaluation of methodology and quality characteristics of systematic reviews in orthodontics
2011 : Orthodontics & craniofacial research
Evaluating the quality of conduct of systematic reviews on the application of transcranial magnetic stimulation (TMS) for aphasia rehabilitation post-stroke
2020 : Aphasiology
The effectiveness of mandibular advancement devices in the treatment of obstructive sleep apnoea in adults: a methodological quality assessment of systematic reviews
2020 : European journal of orthodontics
Poor reporting of search strategy and conflict of interest in over 250 narrative and systematic reviews of two biologic agents in arthritis: a systematic review
2009 : Journal of clinical epidemiology
The methodological quality of systematic reviews and meta-analyses on the effectiveness of non-pharmacological cancer pain management
2015 : Pain management nursing
Non-communicable diseases research output in the Eastern Mediterranean region: an overview of systematic reviews
2020 : Bmc medical research methodology
Reporting of conflicts of interest from drug trials in Cochrane reviews: cross sectional study
2012 : Bmj
Methodological quality of meta-analyses on treatments for chronic obstructive pulmonary disease: a cross-sectional study using the AMSTAR (Assessing the Methodological Quality of Systematic Reviews) tool
2015 : Npj primary care respiratory medicine
Epidemiology, quality, and reporting characteristics of systematic reviews and meta-analyses of nursing interventions published in Chinese journals
2015 : Nursing outlook
Methodological and reporting quality evaluation of systematic reviews on acupuncture in women with polycystic ovarian syndrome: A systematic review
2018 : Complementary therapies in clinical practice
Methodological quality of systematic reviews in subfertility: a comparison of Cochrane and non-Cochrane systematic reviews in assisted reproductive technologies
2012 : Human reproduction
Quality Assessment of Systematic Review of the Bariatric Surgery for Diabetes Mellitus
2019 : Journal of diabetes research
Assessment of the quality of systematic reviews on COVID‐19: A comparative study of previous coronavirus outbreaks
2020 : Journal of medical virology
Epidemiology, quality and reporting characteristics of systematic reviews of traditional Chinese medicine interventions published in Chinese journals
2011 : Plos one
An evaluation of epidemiological and reporting characteristics of complementary and alternative medicine (CAM) systematic reviews (SRs)
2013 : Plos one
Not all systematic reviews are created equal
2018 : Canadian journal of occupational therapy
Systematic review adherence to methodological or reporting quality
2017 : Systematic reviews
How are systematic reviews of prevalence conducted? A methodological study
2020 : Bmc medical research methodology
The reporting quality of systematic reviews and meta-analyses in vascular surgery needs improvement: a systematic review
2014 : International journal of surgery
The Reporting Quality of Systematic Reviews in Japanese Physical Therapy Journals
2020 : Progress in rehabilitation medicine
Need for quality improvement in renal systematic reviews
2008 : Clinical journal of the american society of nephrology
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
The collaboration and reporting quality of social welfare systematic reviews in the Campbell Collaboration online library
2019 : Health & quality of life outcomes
Survey of the reporting characteristics of systematic reviews in rehabilitation
2013 : Physical therapy
Methodologic quality of systematic reviews published in the plastic and reconstructive surgery literature: a systematic review
2016 : Plastic and reconstructive surgery
Systematic reviews in dentistry: Current status, epidemiological and reporting characteristics
2019 : Journal of dentistry
Epidemiology and Reporting Characteristics of Systematic Reviews of Biomedical Research: A Cross-Sectional Study
2016 : Plos medicine
Appraising the Quality of Systematic Reviews for Age-Related Macular Degeneration Interventions: A Systematic Review
2018 : Jama ophthalmology
Reporting of financial conflicts of interest in meta-analyses of drug trials published in high-impact medical journals: comparison of results from 2017 to 2018 and 2009
2020 : Systematic reviews
The quality of Cochrane systematic reviews of acupuncture: an overview
2020 : Bmc complementary medicine and therapies
Association Between Prospective Registration and Quality of Systematic Reviews in Type 2 Diabetes Mellitus: A Meta-epidemiological Study
2021 : Frontiers in medicine
Methodological appraisal of the evidence about efficacy of metabolic surgery in adults with non-morbid obesity and hypertension: An overview of systematic reviews
2022 : International journal of surgery
Analysis of Systematic Reviews in Clinical Practice Guidelines for Head and Neck Cancer
2022 : Laryngoscope
Adherence to the PRISMA statement and its association with risk of bias in systematic reviews published in rehabilitation journals: A meta-research study
2022 : Brazilian journal of physical therapy
An overview of the characteristics and methodological standards across systematic reviews with Meta-analysis of efficacy/effectiveness of influenza antiviral drugs
2022 : Current medical research & opinion
Identification of outcomes reported for hospital antimicrobial stewardship interventions using a systematic review of reviews
2023 : Jac-antimicrobial resistance
Acupuncture and Related Therapies for Chronic Urticaria: A Critical Overview of Systematic Reviews
2022 : Evidence-based complementary & alternative medicine: ecam
A cross-sectional analysis of harms reporting in systematic reviews evaluating laminectomy
2023 : North american spine society journal
A review found heterogeneous approaches and insufficient reporting in overviews on adverse events
2022 : Journal of clinical epidemiology
An Overview of Systematic Reviews: Acupuncture in the Treatment of Essential Hypertension
2022 : International journal of general medicine
Changing patterns in reporting and sharing of review data in systematic reviews with meta-analysis of the effects of interventions: cross sectional meta-research study
2022 : Bmj
Saturated fat, the estimated absolute risk and certainty of risk for mortality and major cancer and cardiometabolic outcomes: an overview of systematic reviews
2023 : Systematic reviews