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Analyzing the Results

Screening and selecting studies is a methodical process. To reduce bias at least 2 members of the review team should be involved in the screening of the articles.

SCREENING & SELECTING STUDIES

Deduplicate Results

Title & Abstract Screening

Full text Screening

Quality & Risk of Bias Assessment

Document the Process

Step 14: Deduplicate Results

Before you begin screening the results, you need to remove all duplicate articles. Many citation managers assist with this process as well as:

Step 15 & 16: Screening the Results

The initial pass through the results is scanning the title and abstract. Apply your inclusion and exclusion criteria to these sections. If in doubt, include the article.

Rayyan, SR-Accelerator, and Nested Knowledge allow users to populate the tools with inclusion and exclusion criteria. Users can then apply these criteria during the screening process.

The second pass is a full text screening. Again apply your inclusion and exclusion criteria to each article to determine the articles to be included in your review. If necessary, full text copies can be obtained through:

REMEMBER: To reduce bias at least 2 members of the review team should be involved in the screening of the articles.

Step 17: Quality & Risk of Bias Assessment

Create a consistent and reproducible method to analyze the quality of your included studies. While this assessment can be subjective, you will need to make note of how this process was conducted. There are many tools to assist you with determining bias and potential issues in study methodologies:

Other information on assessing bias and quality:

Step 18: Document the Process

You will need to track all information of the search process: search results, duplicates, reasons for exclusion, etc. This information can then be recorded in a PRISMA flow diagram:

PRISMA 2020 Flow Diagram

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