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Table 4 Consistencya between ICD-10 diagnoses in the Norwegian Patient Registry (NPR) and DSM-IV diagnosis in the Thematically Organized Psychosis (TOP) study

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

TOP group   SCZ (n = 537) DEL (n = 48) SCA (n = 118) BIP (n = 408)
NPR diagnoses ICD-10 codes n % n % n % n %
Severe mental disorder F20-F31, F32.3, F33.3 36,544 100 1661 100 6322 100 13,238 100
Schizophrenia F20 31,040 84.9 523 31.5 1040 16.5 174 1.3
Delusional disorder F22 1123 3.1 982 59.1 186 2.9 146 1.1
Schizoaffective disorder F25 1509 4.1 0 0 4168 65.9 543 4.1
Bipolar disorder F30–F31 599 1.6 66 4.0 695 11.0 12,044 91.0
  1. Abbreviations: ICD-10 International Classification of Diseases, 10th revision, DSM-IV Diagnostic and Statistical Manual of Mental Disorders, 4th edition, TOP Thematically Organized Psychosis, SCZ schizophrenia, DEL delusional disorder, SCA schizoaffective disorder, BIP bipolar disorder (type I, type II, and bipolar disorder not otherwise specified)
  2. a Percentage of all registered contacts with a severe mental disorder diagnosis (F20–F31, F32.3, F33.3) in the NPR during 2008–2013 that included the primary DSM-IV diagnosis assigned when recruited to the TOP-study between 18.10.2002 and 01.09.2014