In order to describe the included studies, midigate the risk of bias, and enable synthesis and and and meta-analysis, you will need to collect data from each study. During the planning stage, state what data you plan to collect their systematic review, and develop a strategy for obtaining them. You may choose to utilize software to facilitate data extraction and coding (see Tools & Software) or use a standardized template.
The Cochrane Handbook for Systematic Reviews of Interventions provides detailed guidance in the following chapters:
See also, Data Extraction & Management from Systematic Review: a How-To Guide from Dalhousie University, Dalhousie Libraries.
Table 5.3.a Checklist of items to consider in data collection from the Cochrane Handbook for Systematic Reviews of Interventions provides guidance on selecting what data to record.
Information about data extraction from reports
The PRISMA checklist provides reporting guidelines for documenting & reporting your data extraction process and results.
Item 10: Data collection process
Item 11: Data items
Item 13: Summary measures
Item 18: Study characteristics
Item 20: Results of individual studies
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