What does a systematic review aim to achieve?

What does a systematic review aim to achieve?

• A. Synthesize all relevant studies on a question using explicit methods.
• B. Publish as many studies as possible.
• C. Exclude non-significant studies.
• D. Provide a single best study as evidence.

Answer: (A)

Systematic reviews aim to synthesize all relevant studies on a question using explicit, preplanned methods to minimize bias and provide a transparent, reproducible summary of the evidence. They follow a predefined protocol, conduct a comprehensive search to identify eligible studies, apply clear inclusion criteria, assess the quality or risk of bias of each study, and then summarize the findings—often combining results quantitatively in a meta-analysis or narratively if pooling isn’t appropriate. This rigorous, transparent approach is what sets them apart, prioritizing complete and unbiased evaluation over simply collecting many studies, excluding non-significant results, or relying on a single piece of evidence.

Systematic reviews aim to synthesize all relevant studies on a question using explicit, preplanned methods to minimize bias and provide a transparent, reproducible summary of the evidence. They follow a predefined protocol, conduct a comprehensive search to identify eligible studies, apply clear inclusion criteria, assess the quality or risk of bias of each study, and then summarize the findings—often combining results quantitatively in a meta-analysis or narratively if pooling isn’t appropriate. This rigorous, transparent approach is what sets them apart, prioritizing complete and unbiased evaluation over simply collecting many studies, excluding non-significant results, or relying on a single piece of evidence.