Systematic Reviews and Meta-Analysis: Tips for Getting Started: Data Extraction

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Data extraction:

• done by more than one person
• verification of extracted data
• done by subject experts, methodologists, or both?
• training of coding instructions for forms
• how data will be extracted from multiple reports of the same study
• how disagreements will be handled

5. Selecting studies and collecting data.  (2008).  In J. Higgins & S. Green (Eds.),  Cochrane handbook for systematic reviews of interventions.  Chichester, England: Wiley-Blackwell

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