Videos from PubMed
Self-paced guide from PubMed
Want more? Go to the beginning for a good introduction to PICO.
Finding and Using Health Statistics
From the National Library of Medicine (NLM), this tutorial describes the range of available health statistics, identifies their sources and helps you understand how to use information about their structure as you search.
| AND | Combine search terms so that each search result contains all of the terms. |
| OR |
Combine similar search terms so that each search result contains at least one of the terms. |
| NOT | Exclude terms so that each search result contains none of the terms that follow. |
| * | For truncation, use * at the end of a root word to search for all forms of that word. Example: comput* for computer, compute, computational, computed... |
| " " | Use quotation marks to search for an exact phrase. Example: “blood pressure” |
| ( ) | Use parentheses for order of operations. Group similar terms with parentheses & OR. Example: (“blood pressure” OR BP) |