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Table 4 Two by Two table comparing diagnosis of psychotic data using algorithm derived from General Practice Data compared to gold standard

From: The health informatics cohort enhancement project (HICE): using routinely collected primary care data to identify people with a lifetime diagnosis of psychotic disorder

Psychotic disorder diagnosis OPCRIT--Yes OPCRIT--No Totals
GP data--Yes 33 1 34
GP data--No 9 26 35
Totals 42 27 69