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Boolean Operators
Boolean operator search enables a text search of key words that yields
fewer reports than does a single search term. In your text search of the
Prevention Communication Research Database (PCRD), you can join search terms
by using Boolean operators such as AND, OR, ADJ, or
NOT.
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Boolean Operator |
Search Results |
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AND
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Searches using and will yield all reports containing both or
all of the words in the search string.
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OR
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Searches using or will yield reports containing any of the words in
the search string.
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ADJ
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Searches using adj (adjacent) will yield reports that contain
words as a phrase in the exact order as they are typed.
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NOT
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Searches using not
will yield reports that exclude a variant of a search term.
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The following are examples of searches using Boolean operators:
- African American AND female AND adult
- Physical activity OR exercise
- Healthy ADJ eating
- AIDS NOT hearing
Please keep in mind that the more words you join using Boolean operators,
the more specific and limited your search becomes. As a result, with more
search terms you may retrieve fewer reports from PCRD.
Back to Search Page
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