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How to critically appraise and apply meta-analyses in clinical practice
Roger C M Ho1, Hatta S Ong, Kundadak G Kudva
1Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore. pcmrhcm@nus.edu.sg
International Journal of Rheumatic Diseases
|January 5, 2011
Summary
This critical appraisal found mycophenolate mofetil (MMF) to be as effective and safer than cyclophosphamide (CYC) for lupus nephritis. However, caution is advised due to limitations in the meta-analysis and primary studies.
Area of Science:
- Nephrology
- Rheumatology
- Clinical Pharmacology
Background:
- Lupus nephritis treatment involves comparing immunosuppressive agents.
- Mycophenolate mofetil (MMF) and cyclophosphamide (CYC) are key treatments for proliferative lupus nephritis.
- Clinical questions arise regarding the comparative efficacy and safety of MMF versus CYC.
Purpose of the Study:
- To critically appraise a meta-analysis comparing MMF and CYC for proliferative lupus nephritis.
- To evaluate the efficacy and safety of MMF versus CYC based on existing meta-analytic evidence.
- To assess the validity and applicability of meta-analysis findings in clinical practice.
Main Methods:
- Critical appraisal of a selected meta-analysis (Mak et al., 2009).
- Evaluation based on focused clinical question, outcomes, inclusion criteria, study quality, and reproducibility.
- Sensitivity analysis and meta-regression were considered.
Main Results:
- The selected meta-analysis indicated MMF is as efficacious as, and safer than, CYC.
- Strengths included a focused question, relevant outcomes, appropriate criteria, quality assessment, and sensitivity analysis.
- Weaknesses identified were potential missed studies, selection bias, low primary study quality, and lack of cost-effectiveness data.
Conclusions:
- Meta-analyses are crucial for evidence-based practice and research direction.
- Methodological limitations in meta-analyses and primary studies necessitate caution when applying results.
- Clinical decisions require careful consideration of meta-analysis strengths and weaknesses.
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