Skip to Main Content

It looks like you're using Internet Explorer 11 or older. This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge. If you continue with this browser, you may see unexpected results.

NURS 604 / N604: Promoting Health in Vulnerable Populations (May 2018)


What are interventional studies?

Interventional studies are a specific epidemiological study type which is prospective and specifically tailored to evaluate direct impacts of treatment or preventive measures on disease. For example, a investigation of the iodine supplementation of cooking salt to prevent cretinism in a region with iodine deficiency.

Tips for searching for interventional studies

Articles outlining interventional studies, like other peer-reviewed and evidenced-based articles, can be found through searching CINAHL and other nursing databases.

  • To best develop keywords for your search, formulate a research question using the PICOT format.
  • Consult CINAHL Headings for alternative terms from your PICOT.
  • Avoid using "intervention" as a keyword. Many intervention articles will not have this term in their name or abstracts.
  • Avoid using the journal subset or publication type Advanced Search limiters, at least at first search. These may exclude many articles which were not exhaustively indexed.
  • Consider, after a initial search, to use the Advanced Search limiter Special Interest and the category Public Health.
  • Read abstracts. A reading can determine whether the article is an intervention study or not.


Nursing Databases