Skip to Main Content

Cochrane Database of Systematic Reviews


Where Should I Start?

The Advanced Search page is a great place to start because:

*It can do more than one type of search at a time

*It has several limiting features which help make searches more effective

What are the Best Search Strategies to Use?

Can I use quotation marks to search multiple words as a phrase?
Quotation marks aren't needed; this database automatically searches multiple terms as a phrase.
 


Using the following techniques will greatly facilitate your searching:

 

  • Start with a simple search on an intervention or outcome central to your research. Remember, there are only 4000 total reviews here.

    Example:  deep vein thrombosis
  •  Broaden the search by using OR
     (Separate search words with OR and enclose in parentheses if all terms are on one line.)


    Example:  deep vein thrombosis OR venous thrombosis 
  •  Narrow the search using AND to combine terms (this will not often be necessary in Cochrane)
     

    Example:  thrombosis and surgical patients

    (This search will find articles that contain both terms) 

Screenshot of OR Boolean circled in Cochrane advanced search