To perform a search, please use key
words based on the information being sought. You can:
Use quotation marks to find phrases ("children's health").
Or: Use "or" between key words to find all references to one or both key words ("ulcer or sore").
And: Use "and" between key words to find all references with both search terms ("health and system").
Near: Use "near" between key words to find references that have the key words close to each other ("health near system").
Wildcard: Use one asterisk after a root word to find all terms that include that root word ("research*" will find: research, researcher, researching...).
For more information on advanced searches, select Advanced Search Help.
AHRQ Home Page
Department of Health and Human Services