There are many ways to refine your search results in CINAHL. One of the easiest ways to do this iis to type in your terms to get a list of citations, and then use the limits that are listed under Refine Results on the left-hand side of the screen.
Limit by date: Use the slider bar under the Limit To section to select a date range, or type in the beginning and ending years in the boxes above the bar.
Limit by country: Select a country under the Geography section. USA is listed first.
Limit by language: Select a language under the Language section.
The Advanced Search screen is the default screen that appears when you select the database. This screen includes Search Options that are listed below the search text boxes.
Evidence Based Practice: Check the box for Evidence Based Practice in the right column,
Practice Guidelines: Select Practice Guidelines from the Publication Type box in the right column,
Research articles: Check the box for Research in the left column.
Scholarly (Peer Reviewed) Journals: Check the box for Scholarly Journals in the right column.