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Table 3 Set of three queries populating the 2-by-2 table

From: Locating previously unknown patterns in data-mining results: a dual data- and knowledge-mining method

Query 1 find number of records where Attribute 1 contains value "present"
Query 2 find number of records where Attribute 2 contains value "present"
Query 3 find number of records where Attribute 1 contains value "present" AND Attribute 2 contains value "present"