These steps for conducting a systematic literature review are listed below.
Also see subpages for more information about:
Consider the PICO Format: Population/Problem, Intervention, Comparison, Outcome
Focus on defining the Population or Problem and Intervention (don't narrow by Comparison or Outcome just yet!)
"What are the effects of the Pilates method for patients with low back pain?"
A "scoping search" investigates the breadth and/or depth of the initial question or may identify a gap in the literature.
Eligible studies may be located by searching in:
When searching, if possible, translate terms to controlled vocabulary of the database. Use text word searching when necessary.
Use Boolean operators to connect search terms:
Search: pilates AND ("low back pain" OR backache)
Download a Boolean worksheet (PDF)
Expand your search strategy with synonymous search terms harvested from:
(pilates OR exercise movement techniques) AND ("low back pain" OR backache* OR sciatica OR lumbago OR spondylosis)
As you develop a final, reproducible strategy for each database, save your strategies in a:
Use database filters to limit your results based on your defined inclusion/exclusion criteria. In addition to relying on the databases' categorical filters, you may also need to manually screen results.
NOTE: Many databases allow you to filter to "Full Text Only". This filter is not recommended. It excludes articles if their full text is not available in that particular database (CINAHL, PubMed, etc), but if the article is relevant, it is important that you are able to read its title and abstract, regardless of 'full text' status. The full text is likely to be accessible through another source (a different database, or Interlibrary Loan).
Selected citations and/or entire sets of search results can be downloaded from the database into a citation management tool. If you are conducting a systematic review that will require reporting according to PRISMA standards, a citation manager can help you keep track of the number of articles that came from each database, as well as the number of duplicate records.
In Zotero, you can create a Collection for the combined results set, and sub-collections for the results from each database you search. You can then use Zotero's 'Duplicate Items" function to find and merge duplicate records.
Covidence is a web-based tool that enables you to work with a team to screen titles/abstracts and full text for inclusion in your review, as well as extract data from the included studies.
The PRISMA (Preferred Reporting Items for Systematic reviews and Meta-Analyses) flow diagram is a visual representation of the flow of records through different phases of a systematic review. It depicts the number of records identified, included and excluded. It is best used in conjunction with the PRISMA checklist.
Example from Navarra, A.-M. D., Gwadz, M. V., Whittemore, R., Bakken, S. R., Cleland, C. M., Burleson, W., … Melkus, G. D. (2017). Health Technology-Enabled Interventions for Adherence Support and Retention in Care Among US HIV-Infected Adolescents and Young Adults: An Integrative Review. AIDS and Behavior. https://doi.org/10.1007/s10461-017-1867-6
There are a number of reporting guideline available to guide the synthesis and reporting of results in systematic literature reviews.
It is common to organize findings in a matrix, also known as a Table of Evidence (ToE).
Cook, D. A., & West, C. P. (2012). Conducting systematic reviews in medical education: a stepwise approach. Medical Education, 46(10), 943–952.