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