Advanced syntax


Queries use the plus sign + in place of the space character. Wherever you would use a space character, use a plus sign instead.

Phrase matches

For phrase matches, use double quotation marks " " around the words. For example, "multiple+myeloma".


To group several terms together, use parentheses ( ). For example, (patient.drug.medicinalproduct:cetirizine+loratadine+diphenhydramine). Terms separated by plus signs + are treated as in a boolean OR. To join terms as in a boolean AND, use the term +AND+. For example, (patient.drug.medicinalproduct:cetirizine+loratadine+diphenhydramine)+AND+serious:2 requires that any of the drug names match and that the field serious also match.