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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