Data extraction is the process by which researchers obtain necessary information about study characteristics and findings from included studies in a systematic literature review. Researchers must determine what data needs to be extracted from studies to answer the review's questions and develop a data extraction form to extract this information in a consistent manner. The extracted data is then typically summarized in a table of evidence to synthesize the findings across studies.

1. Data Extraction in
Systematic Literature Review
Prof. Dr. Khalid Mahmood
University of the Punjab

2. Data extraction
 The process by which researchers obtain the necessary
information about study characteristics and findings from the
included studies.
 Think about what data you need to extract from included
studies to answer the questions. It varies from review to
review.
 Develop and pilot a data extraction form

3. Data
extraction
form –
Example

4. Summary
table of
evidence

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