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Nursing: Evidence Based Practice

Evidence Based Practice (EBP) Resources

Searching For Evidence

PubMed (an open access database with some full text and some abstracts only),TRIP ( (an open access database with some full text and some abstracts only) and CINAHL (full text subscription database available through from SCC Holt Library) are excellent resources to use when in need of evidence based literature.

PubMed, TRIP, CINAHL and many other medical databases use MeSH subject headings as the official terms to describe concepts related in medical articles. MeSH (Medical Subject Headings) terms, which are created by the National Library of Medicine, can be thought of as a dictionary or thesaurus which assists in finding and using the correct terms to find the most relevant articles.

Identifying MeSH terms can also be a challenge. PubMed includes a searchable database of MeSH terms which allow the user to type in a keyword and see the closest matching MeSH terms.

PubMed has designed a search page specifically for clinical queries. This will assist you in using the appropriate filters, selecting clinical categories, and finding systematic reviews of primary research. To access this search screen select Clinical Queries under the PubMed Services menu, or click PubMed Clinical Queries.

CINAHL and TRIP use similar Methodology limits. To access PubMed, TRIP and CINAHL see below or visit the Databases page of this Guide.

By checking the EBM Reviews box, you will only retrieve search results from selected journals that publish EBM Reviews. These articles will generally be meta-analyses of primary research studies.

The Clinical Queries limit allows you to limit your search to articles that address a particular area of your topic. MEDLINE will limit based upon nine areas: Therapy, Diagnosis, Prognosis, Reviews, Clinical Prediction Guides, Qualitative, Causation (Etiology), Costs, and Economics. The "High Sensitivity" option for each area will run a broad search and retrieve all relevant material. The "High Specificity" option for each area will run a narrower search and only retrieve the most relevant results. The "Best Balance" option for each area will combine both of the above options.

In CINAHL, you may limit your search to Evidence-Based Practice using the checkbox shown below. Applying this limiter allows you to limit results to:

  • Articles from evidence-based practice journals
  • Articles about evidence-based practice
  • Research articles (including systematic reviews, clinical trials, meta analyses, etc.)
  • Commentaries on research studies (applying practice to research)

You may also need to search CINAHL subject headings to find the appropriate CINAHL/MeSH subject Terms. See this tutorial for more information.