Explore the wealth of resources available across the web. Here are some good places to start.

Systematic reviews, a guide: Data extraction

http://researchguides.ebling.library.wisc.edu/systematic-reviews/author/data

Systematic reviews: The process: Data management (data extraction tools and tips for creating evidence tables from the Duke University Medical Center Library & Archives)

http://guides.mclibrary.duke.edu/c.php?g=158155&p=1035832

Link to the PRISMA 2009 checklist

http://prisma-statement.org/documents/PRISMA%202009%20checklist.pdf

Sample data extraction form for a systematic review of quantitative evidence

www.rccm.org.uk/sites/default/files/files/DECA%20forms.pdf