Evidence map›Paper›PMID 40877884›Full record

ArticleBMC psychiatry2025

The validity of diagnoses of non-affective psychotic disorder including schizophrenia in Swedish registers revisited - are the diagnoses valid for migrants and Swedish-born?

Jens Falk, Lidija Pavlovic, Susanne Wicks, Christina Dalman, Anna-Clara Hollander

Abstract readValidation Study
In one paragraph

Article in BMC psychiatry, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Jens Falk *Epidemiology of Psychiatric Conditions, Substance Use and Social Environment (EPiCSS), Department of Global Public Health, Karolinska Institutet, Solnavägen 1E, Stockholm, Sweden.
Lidija Pavlovic *Epidemiology of Psychiatric Conditions, Substance Use and Social Environment (EPiCSS), Department of Global Public Health, Karolinska Institutet, Solnavägen 1E, Stockholm, Sweden.
Susanne WicksEpidemiology of Psychiatric Conditions, Substance Use and Social Environment (EPiCSS), Department of Global Public Health, Karolinska Institutet, Solnavägen 1E, Stockholm, Sweden.
Christina DalmanEpidemiology of Psychiatric Conditions, Substance Use and Social Environment (EPiCSS), Department of Global Public Health, Karolinska Institutet, Solnavägen 1E, Stockholm, Sweden.
Anna-Clara HollanderEpidemiology of Psychiatric Conditions, Substance Use and Social Environment (EPiCSS), Department of Global Public Health, Karolinska Institutet, Solnavägen 1E, Stockholm, Sweden. anna-clara.hollander@ki.se.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe first aim of the study was to assess the validity of non-affective psychosis diagnoses, including schizophrenia, for migrants and Swedish-born to determine if the registered diagnoses were of sufficient quality for epidemiological research. If the validity was insufficient, the second aim was to find out what the non-valid cases have in common to see if there was a feasible way to handle these cases in future studies. STUDY

designWe validated the register-diagnoses of 179 randomly selected patients aged 18-48 living in municipalities with a high proportion of migrants, diagnosed with non-affective psychotic disorder (F20-F29 according to ICD-10), drawn from the Region of Stockholm's medical records database by comparing them to their case notes to see if they fulfilled the DSM-5 criteria.

resultsWe found acceptable validity for non-affective psychotic disorder for migrant men (70.5%), low for Swedish-born men (60.0%), and even lower for women (50.0% for Swedish-born and 40.0% for migrants). There was no statistically significant difference between Swedish-born and migrants. The case notes revealed that by excluding cases with an additional diagnosis equivalent of psychotic disorder due to psychoactive substance (ICD10: F11X.5 and F11X.7) the validity was good for both Swedish-born and migrant men.

conclusionsThis study supports continued use of the register-diagnoses but only after taking appropriate measures to avoid that patients with additional psychotic disorder due to psychoactive substance are not violating the validity. It also suggests caution when studying non-affective psychosis diagnoses among migrant women as the validity is low, possibly due to difficulties in separating non-affective psychosis from symptoms of other disorders with psychotic features.

Indexed as

Emigrants and ImmigrantsPsychotic DisordersRegistriesSchizophreniaTransients and MigrantsAdolescentAdultFemaleHumansMaleMiddle AgedReproducibility of ResultsSwedenYoung AdultDiagnostic validityDSM-5ICD-10Non-affective psychotic disorderRegister-based epidemiologySchizophrenia

Identifiers

PMID40877884
PMCPMC12392502

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