Enhancing identification of nonaffective psychosis in register-based studies

Abstract The Finnish Quality of Psychosis Care Register assesses nonaffective psychosis (NAP) care, acknowledging treatment outside specialized psychiatric services. This approach, while providing a holistic view, raises concerns about diagnostic inaccuracies. Here, we studied situations where the r...

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Main Authors: Minna Holm, Kimmo Suokas, Emmi Liukko, Maija Lindgren, Petri Näätänen, Jukka Kärkkäinen, Raimo K. R. Salokangas, Jaana Suvisaari
Format: Article
Language:English
Published: Nature Portfolio 2024-02-01
Series:Schizophrenia
Online Access:https://doi.org/10.1038/s41537-024-00444-6
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author Minna Holm
Kimmo Suokas
Emmi Liukko
Maija Lindgren
Petri Näätänen
Jukka Kärkkäinen
Raimo K. R. Salokangas
Jaana Suvisaari
author_facet Minna Holm
Kimmo Suokas
Emmi Liukko
Maija Lindgren
Petri Näätänen
Jukka Kärkkäinen
Raimo K. R. Salokangas
Jaana Suvisaari
author_sort Minna Holm
collection DOAJ
description Abstract The Finnish Quality of Psychosis Care Register assesses nonaffective psychosis (NAP) care, acknowledging treatment outside specialized psychiatric services. This approach, while providing a holistic view, raises concerns about diagnostic inaccuracies. Here, we studied situations where the register-based diagnosis might be inaccurate, and whether the first episode can be reliably identified using a 14-year wash-out period. People with first register-based NAP (ICD-10 F20-F29) between years 2010 and 2018 and without NAP diagnoses in 1996–2009 were identified from the Care Register for Health Care. A diagnosis of NAP was deemed unreliable before age 7, when dementia preceded NAP diagnosis, and when a NAP diagnosis had been assigned at admission or during psychiatric hospitalization but was not confirmed by discharge diagnosis. Despite a 14-year follow-back the first register diagnosis may miss the first treatment episode in older patients. Register-based studies on psychotic disorders should pay attention to exclusion criteria and to the definition of treatment onset.
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spelling doaj.art-25856922b6d046658523387abee414052024-03-05T19:25:19ZengNature PortfolioSchizophrenia2754-69932024-02-011011810.1038/s41537-024-00444-6Enhancing identification of nonaffective psychosis in register-based studiesMinna Holm0Kimmo Suokas1Emmi Liukko2Maija Lindgren3Petri Näätänen4Jukka Kärkkäinen5Raimo K. R. Salokangas6Jaana Suvisaari7Finnish Institute for Health and Welfare, Equality UnitFinnish Psychiatric AssociationFinnish Institute for Health and Welfare, Data and Analytics UnitFinnish Institute for Health and Welfare, Equality UnitDepartment of Psychiatry, University of Helsinki and Helsinki University HospitalCounty of Satakunta, Psychiatry of Wellbeing servicesDepartment of Psychiatry, University of TurkuFinnish Institute for Health and Welfare, Equality UnitAbstract The Finnish Quality of Psychosis Care Register assesses nonaffective psychosis (NAP) care, acknowledging treatment outside specialized psychiatric services. This approach, while providing a holistic view, raises concerns about diagnostic inaccuracies. Here, we studied situations where the register-based diagnosis might be inaccurate, and whether the first episode can be reliably identified using a 14-year wash-out period. People with first register-based NAP (ICD-10 F20-F29) between years 2010 and 2018 and without NAP diagnoses in 1996–2009 were identified from the Care Register for Health Care. A diagnosis of NAP was deemed unreliable before age 7, when dementia preceded NAP diagnosis, and when a NAP diagnosis had been assigned at admission or during psychiatric hospitalization but was not confirmed by discharge diagnosis. Despite a 14-year follow-back the first register diagnosis may miss the first treatment episode in older patients. Register-based studies on psychotic disorders should pay attention to exclusion criteria and to the definition of treatment onset.https://doi.org/10.1038/s41537-024-00444-6
spellingShingle Minna Holm
Kimmo Suokas
Emmi Liukko
Maija Lindgren
Petri Näätänen
Jukka Kärkkäinen
Raimo K. R. Salokangas
Jaana Suvisaari
Enhancing identification of nonaffective psychosis in register-based studies
Schizophrenia
title Enhancing identification of nonaffective psychosis in register-based studies
title_full Enhancing identification of nonaffective psychosis in register-based studies
title_fullStr Enhancing identification of nonaffective psychosis in register-based studies
title_full_unstemmed Enhancing identification of nonaffective psychosis in register-based studies
title_short Enhancing identification of nonaffective psychosis in register-based studies
title_sort enhancing identification of nonaffective psychosis in register based studies
url https://doi.org/10.1038/s41537-024-00444-6
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