Boolean Logic (continued)

To review:

• Boolean operators AND, OR and NOT must be entered in UPPERCASE.
• AND is the default operator used in PubMed. If you do not include Boolean operators in your search, PubMed will automatically use AND between terms.
• PubMed processes Boolean connectors left-to-right.
• You can change the order of processing by nesting an individual concept in parentheses. The terms inside the parentheses will be processed as a unit and then incorporated into the overall strategy. [Show Me]

< Back | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | Next >