Different types of evidence may be found in different databases and other resources. Using the Levels of Evidence pyramid (see Appraise the Evidence), try a top down approach to searching. To do this, look for high level quantitative evidence first, then work your way through to the primary literature.
When deciding which database to search, be sure to consider your topic and where that subject may be best covered. Depending on the desired comprehensiveness or your particular topic, you may also want to search in a supplementary database. Below are some common supplementary databases you may want to consider, but you can also view a complete list of all databases available through the Health Sciences Library as well as the University Libraries.
