After you perform screening at the title/abstract level and the fulltext level, you get the final set of selected studies. The next step is to extract relevant data according to your pre-defined criteria and a data extraction template.
Here are a few recommended readings on data extraction:
- Elamin MB, Flynn DN, Bassler D, Briel M, Alonso-Coello P, Karanicolas PJ, Guyatt GH, Malaga G, Furukawa TA, Kunz R, Schunemann H, Murad MH, Barbui C, Cipriani A, Montori VM. Choice of data extraction tools for systematic reviews depends on resources and review complexity. J Clin Epidemiol. 2009;62(5):506-10. Epub 2009/04/08. doi: 10.1016/j.jclinepi.2008.10.016. PubMed PMID: 19348977.
- Li T, Vedula SS, Hadar N, Parkin C, Lau J, Dickersin K. Innovations in data collection, management, and archiving for systematic reviews. Ann Intern Med. 2015;162(4):287-94. Epub 2015/02/17. doi: 10.7326/m14-1603. PubMed PMID: 25686168.
Free Tool:
Systematic Review Toolbox
"The
Systematic Review Toolbox is a community-driven, searchable, web-based catalogue of tools that support various tasks within the systematic review and wider evidence synthesis process. The toolbox aims to help researchers and reviewers find the following:
- Software tools
- Quality assessment / critical appraisal checklists
- Reporting standards
- Guidelines"