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IWU OCLS Tutorials: Evidence-Based Toolkit for Nursing - Resources


Librarians may not be available during all open hours but will answer ASAP.

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Do It Yourself Evidence-Based Medicine Reviews


If no official EBM review has been done on your topic, these filters and hedges may be helpful in reducing the amount of literature you need to analyze.




Free Online Resources


National Guidelines Clearinghouse

A public resource for evidence-based clinical practice guidelines from more than 100 institutions and organizations. It is sponsored by the Agency for Healthcare Research and Quality (AHRQ) and the U.S. Department of Health and Human Services, in partnership with the American Medical Association and the American Association of Health Plans.

Professional Organizations such as the 
American Heart Association, the National Cancer Institute, the American Psychiatric Association or the American Academy of Pediatrics may post relevant evidence-based medicine reviews or practice guidelines based on EBM reviews on their Web sites.

At least some of these will be picked up by the 
National Guidelines Clearinghouse.



EBP Metasearch


Trip Database
A free clinical search engine, designed to allow users to quickly and easily find and use high-quality research evidence to support their practice and/or care.  As well as research evidence Trip also allow clinicians to search across other content types including images, videos, patient information leaflets, educational courses and news. Trip stands for "Translating Research Into Practice".



Practice Guidelines in OCLS Databases


In many of the IWU OCLS Nursing databases (MEDLINE, CINAHL, Nursing Resource Center), you can limit your search to just practice guidelines - look for a limiter called "guidelines" or "practice guidelines", often found under "Publication Types".




These tools will help you to interpret the clinical and statistical significance of data reported in clinical research.

EBM Calculators

  • Odds Ratio to NNT Converter
  • Diagnostic Test Calculator
  • Prospective Study Calculator
  • Case Control Study Calculator
  • Randomized Controlled Trial Calculator


Diagnostic Test Calculator

  • This calculator can determine diagnostic test characteristics (sensitivity, specificity, likelihood ratios) and/or determine the post-test probability of disease given given the pre-test probability and test characteristics. Given sample sizes, confidence intervals are also computed.


Clinical Calculator I

  • From an Observed Sample: Estimates of Population Prevalence, Sensitivity, Specificity, Predictive Values, and Likelihood Ratios


Clinical Calculator II

  • Predictive Values and Likelihood Ratios

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  • Librarians may not be available all open hours, but will answer ASAP.