The quality of severe mental disorder diagnoses in a national health registry as compared to research diagnoses based on structured interview

Table 5 Consistency (%)^a between ICD-10 diagnoses in the Norwegian Patient Registry (NPR) and DSM-IV diagnosis in the Thematically Organized Psychosis (TOP) study across gender and time

	SCZ	DEL	SCA	BIP
All patients (n = 1111)	84.9	59.1	65.9	91.0
Men (n = 577)	87.5	53.0	65.1	92.6
Women (n = 534)	80.6	72.8	66.4	90.0
Patients included in TOP between 18.10.2002 and 31.12.2007 (n = 530)	88.5	87.1	75.9	93.5
Patients included in TOP between 01.01.2008 and 01.09.2014 (n = 581)	81.2	52.3	56.2	89.4

Data obtained from NPR for the period 2008–2013 on patients recruited to TOP between 18.10.2002 and 01.09.2014
Abbreviations: ICD-10 International Classification of Diseases, 10th revision, DSM-IV Diagnostic and Statistical Manual of Mental Disorders, 4th edition, SCZ schizophrenia, DEL delusional disorder, SCA schizoaffective disorder, BIP bipolar disorder (type I, type II, and bipolar disorder not otherwise specified)
^a Percentage of all registered contacts with a severe mental disorder diagnosis (F20-F31, F32.3, F33.3) in the NPR that included the primary DSM-IV diagnosis assigned when recruited to the TOP-study

ISSN: 1471-244X