[Systematic reviews in five steps: V. Interpreting the findings]

Area of Science:

• Evidence-based medicine
• Systematic reviews
• Clinical research methodology

Context:

• Systematic reviews are crucial for synthesizing research evidence.
• Effective interpretation of findings is the final, critical step.
• Understanding evidence strength and variability is essential for clinical application.

Purpose:

• To outline the interpretation process for systematic review findings.
• To emphasize identifying key findings and assigning strength of evidence.
• To explore variations in effect magnitude across different clinical groups.

Summary:

• Key findings must be explicitly identified and supported by evidence strength (study design, quality, bias).
• Variations in observed associations should be explored to understand differential effects.
• Magnitude of association can be estimated globally or stratified by participant characteristics.

Impact:

• Facilitates accurate interpretation of systematic review results.
• Supports the formulation of evidence-based clinical practice guidelines.
• Informs health policy decisions by clarifying intervention effectiveness and diagnostic utility.