Risk of Bias and Quality of Reporting in Colon and Rectal Cancer Systematic Reviews Cited by National Comprehensive Cancer Network Guidelines

Ref ID 72
First Author C. Wayant
Journal JOURNAL OF GENERAL INTERNAL MEDICINE
Year Of Publishing 2020
URL https://pubmed.ncbi.nlm.nih.gov/31950401/
Keywords • Oncology
• Protocols
• Pre-specification
Problem(s) • No registered or published protocol
• Lack of prespecification in eligibility criteria
• High risk of bias (ROBIS)
Article Type Empirical
Article Subtype Cross-sectional survey/Methodological systematic review
First Author Country United States
Checklists • PRISMA 2009
• ROBIS
Aim To assess the reporting quality (PRISMA) and risk of bias of systematic reviews (ROBIS) of colorectal cancer cited in the US National Comprehensive Cancer Network (NCCN) guidelines for the treatment of colon between 2011 and 2019.
Level of Investigation Descriptive
Summary of Findings Using ROBIS, only 3 (4.8%) of the included 63 systematic reviews were judged with low risk of bias, 35 (55.6%) systematic reviews were judged with unclear risk of bias, and 25 (39.7%) systematic reviews were judged with high risk of bias. Across all systematic reviews, the individual bias domains at the highest risk of bias were domains 1 (protocol and eligibility criteria) and 2 (methods to identify and select studies). Across all studies, the median adherence to PRISMA was 74.1% (IQR 69.2–80.0%), corresponding to approximately 20 of 27 items.
Number of systematic reviews included 63
Number of eligible systematic reviews assessed 224
Treatment impacted No
Treatment impacted description
Interpretation impacted Not Applicable
Interpretation impacted description