How-To Create an Orthopaedic Systematic Review: A Step-by-Step Guide. Part III: Executing a Meta-Analysis

Area of Science:

• Orthopedic Arthroplasty Research
• Evidence-Based Medicine
• Biostatistics

Background:

• Systematic reviews are the highest level of evidence, synthesizing primary studies.
• Meta-analysis, a quantitative systematic review, combines study results for specific research questions.
• This guide focuses on designing and performing meta-analyses in orthopedic arthroplasty.

Purpose of the Study:

• To provide a guide on designing and performing meta-analyses in orthopedic arthroplasty.
• To delineate the advantages and disadvantages of meta-analyses.
• To address challenges like time constraints, heterogeneity, and data availability.

Main Methods:

• Meta-analysis design mirrors systematic reviews but includes effect sizes, variability, and sample sizes.
• Data presentation utilizes forest plots, heterogeneity, and subgroup analyses.
• Commonly used software tools and emerging AI applications are discussed.

Main Results:

• Meta-analyses provide precision and statistical power, enhancing evidence quality.
• Challenges in meta-analysis include time, heterogeneity, and data availability.
• Effective data presentation and analysis are crucial for valid results.

Conclusions:

• Well-executed meta-analyses are foundational resources for orthopedic research.
• The guide aims to equip researchers with the knowledge to conduct robust meta-analyses.
• Meta-analyses contribute significantly to the evidence-based pyramid in orthopedics.