Boolean Examples
Exclude Examples
Wildcard Examples

Use of Boolean

Boolean logic uses the terms “AND” and “OR” as connectors between keywords or phrases to narrow the results of keyword searches.
Searches can be further refined through the use of parentheses. Some examples of Boolean searches in iPOLL:

Examples using “or” / “and”
Keyword(s) in “Search” field
Search results
Prescription All questions containing the word “prescription” in the question wording.
Prescription or Social Security All questions containing either “prescription” or “Social Security” in the question wording.
Prescription and Social Security All questions containing both “prescription” and “Social Security” in the question wording.
Prescription and Social Security and Medicare All questions containing “prescription” and “Social Security” and “Medicare” in the question wording.
Examples using parentheses
Keyword(s) in “Search” field
Search results
(Prescription and Social Security) or (prescription and Medicare) All questions containing either “prescription” and “Social Security” or “prescription” and “Medicare” in the question wording.
Prescription and (Social Security or Medicare) Same.
(Social Security or Medicare) and prescription Same.
(Prescription and Social Security) or Medicare All questions containing both “prescription” and “Social Security” in the question wording, or the word “Medicare.”

Use of Exclude

Searches can be further refined through the use of the “Exclude” field. Some examples of Boolean searches using Exclude in iPOLL:

Examples using Exclude
Keyword(s) in “Search” field Keyword(s) in “Exclude” field
Search results
Prescription “Social Security” All questions containing “prescription” without “Social Security” in the question wording.
Prescription Medicare All questions containing “prescription” without “Medicare” in the question wording.
Prescription “Social Security” AND Medicare All questions containing “prescription” but neither “Social Security” nor “Medicare” in the question wording.
Prescription “Social Security” OR Medicare Same as above..
(Prescription and Social Security) or Medicare income All questions containing both “prescription” and “Social Security” in the question wording, or containing Medicare in the question wording, but without “income” in the question wording.

 

Use of Wildcards

iPOLL uses the percent sign (%) as a wildcard symbol. You can use the wildcard when you wish to search on different forms of the same word without having to specify each form in the “Search” field. For example, enter “ethic%” when you wish to find questions containing “ethic,” “ethics,” “ethical,” or “ethically.” Some keywords present problems in wildcard searching. If you are doing a search on international trade agreements, you might be inclined to search on “import%” to find questions containing “import,” “imports,” “imported,” or “importing,” but such a search will also retrieve thousands of questions containing “important” or “importance.” In a case like this, it is better to enter all the different forms of your keyword separately, or use the Exclude text box to rule out the words you do not want included in the search.