Undocumented or unjustified deviations to the review protocol

Articles that support this problem:

Outcome reporting bias in Cochrane systematic reviews: a cross-sectional analysis

2020 : Bmj open

The fate of urological systematic reviews registered in PROSPERO

2019 : World journal of urology

Comparison of non-Cochrane systematic reviews and their published protocols: differences occurred frequently but were seldom explained

2019 : Journal of clinical epidemiology

Publishing protocols of systematic reviews: comparing what was done to what was planned

2002 : Jama

Bias due to changes in specified outcomes during the systematic review process

2010 : Plos one

Discrepancies in outcome reporting exist between protocols and published oral health Cochrane systematic reviews

2015 : Plos one

Bias due to selective inclusion and reporting of outcomes and analyses in systematic reviews of randomised trials of healthcare interventions

2014 : The cochrane library

Selective reporting of outcomes in randomised controlled trials in systematic reviews of cystic fibrosis

2013 : Bmj open

Methodological Quality of Systematic Reviews on Bodyweight Management Strategies for Children and Adolescents

2023 : Medicine & science in sports & exercise

Evidence Mapping Based on Systematic Reviews of Cognitive Behavioral Therapy for Neuropathic Pain

2023 : Neural plasticity

Tripterygium wilfordii Hook. f. Preparations for Rheumatoid Arthritis: An Overview of Systematic Reviews

2022 : Evidence-based complementary & alternative medicine: ecam

The Campbell Collaboration's systematic review of school-based anti-bullying interventions does not meet mandatory methodological standards

2022 : Systematic reviews

Caution should be exercised when assessing ivermectin for the treatment of COVID-19 in systematic reviews

2022 : Reviews in medical virology

Most Cochrane systematic reviews and protocols did not adhere to the Cochrane's risk of bias 2.0 tool

2023 : Revista da associacao medica brasileira

Examining the state, quality and strength of the evidence in the research on built environments and physical activity among adults: An overview of reviews from high income countries

2022 : Health & place

Is the quality of systematic reviews influenced by prospective registration: a methods review of systematic musculoskeletal physical therapy reviews

2022 : Journal of manual & manipulative therapy

Prescription drug monitoring programs evaluation: A systematic review of reviews

2023 : Drug & alcohol dependence

Acupuncture and Related Therapies for Chronic Urticaria: A Critical Overview of Systematic Reviews

2022 : Evidence-based complementary & alternative medicine: ecam

Assessing the magnitude of changes from protocol to publication-a survey on Cochrane and non-Cochrane Systematic Reviews

2023 : Peerj