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Letter the editor: serious methodological concerns about a recently published meta-analysis on oxygen therapy
Thomas Lass Klitgaard1,2,3, Olav Lilleholt Schjørring4,5,6, Frederik Mølgaard Nielsen4,5,6
1Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark. tlk@rn.dk.
Journal of Intensive Care
|December 8, 2021
Summary
Critically ill patients may receive incorrect conclusions about targeted oxygen therapy due to methodological flaws in a recent systematic review. The review misquoted findings and altered criteria, impacting results on conservative versus conventional oxygen strategies.
Area of Science:
- Critical Care Medicine
- Evidence-Based Practice
- Systematic Reviews and Meta-Analyses
Background:
- A systematic review by Chen et al. examined conservative versus conventional oxygen therapy in critically ill patients.
- The review aimed to synthesize evidence on oxygen management strategies for severe patient populations.
Discussion:
- Significant concerns are raised regarding the methodology and reporting of the Chen et al. systematic review.
- Issues include misquoted findings, incomplete reporting of analyses, and failure to identify all relevant trials.
- Post hoc changes to eligibility criteria and switched directions of effects in secondary outcomes further compromise the review's integrity.
Key Insights:
- The identified flaws lead to potentially incorrect conclusions regarding the efficacy of targeted oxygen therapy.
- Methodological rigor is crucial for accurate interpretation of evidence in critical care.
- Accurate reporting and consistent methodology are essential for reliable systematic reviews.
Outlook:
- Further high-quality systematic reviews with rigorous methodology are needed to clarify optimal oxygen therapy strategies.
- Re-evaluation of existing data with stringent criteria may be necessary.
- Ensuring transparency and adherence to predefined protocols in meta-analyses is paramount for advancing critical care evidence.
