The characteristics of systematic review are as follows

The characteristics of systematic review are the best evidence.

Systematic review refers to the method of comprehensively collecting all relevant studies on a specific clinical problem, applying certain standardized methods to strictly evaluate and analyze them one by one, screening out the documents that meet the quality standards, and drawing comprehensive conclusions through qualitative or quantitative research. Systematic review can be used not only in clinical research, but also in basic research, policy research, economic research and other fields.

As the best evidence, only a high-quality systematic review can provide scientific basis for clinicians, patients and other decision makers.

A high-quality system review should have the following characteristics:

(1) has a clear theme and a clear purpose.

(2) Using comprehensive retrieval strategy to retrieve documents.

③ The inclusion and exclusion criteria are clear.

④ List all selected studies.

⑤ Clearly express the characteristics of each selected study and evaluate the quality of research methodology.

⑥ Explain the reasons for excluding all studies.

⑦ For quantitative analysis, meta-analysis is used meta integrate the results of qualified research.

⑧ If possible, conduct sensitivity analysis and subgroup analysis on the comprehensive results.

Pet-name ruby report research results in a unified format.

Attending to assess the possibility of publication bias.

AMSTAR, developed by experts from the Netherlands and Canada in 2007, is a relatively recognized tool for evaluating the quality of systematic review.