Age-at-First-Registration for Affective Psychosis and Schizophrenia
Abstract
We compared the age-at-first-registration for patients with schizophrenia and affective psychosis in a statewide mental health register. After excluding those receiving (1) a diagnosis of both schizophrenia (ICD-9 295.x) and affective psychosis (ICD-9 296.x), or (2) a diagnosis of ICD-9 296.1 (which can cover "major depressive episode"), we adjusted the distributions for the age structure of the background general population. We found that all distributions showed a wide age range of onset, with a similar male modal age group of 20-24 for schizophrenia and 25-29 for affective psychosis. The female modal age group was 50-54 for both diagnoses. Although more individuals were diagnosed with schizophrenia (males = 2,434, females = 1,609) than with affective psychosis (males = 670, females = 913), the shape of the two distributions was similar. This finding suggests that factors influencing age-at-first-registration for schizophrenia and affective psychosis may be similar, especially for females.
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People who suffer a first episode of psychosis are frequently adolescents or young adults.
“People who suffer a first episode of psychosis (FEP) are frequently adolescents or young adults [1, 2]”
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- Authors
- Welham, J. L., Thomis, R. J., & McGrath, J. J.
- Affiliations
- The University of Queensland (AU)
- Corresponding author
- Welham, J. L.
- ORCID
- McGrath, J. J.
- Venue
- Schizophrenia Bulletin
- Publisher
- Oxford University Press (OUP)
- Published
- 2004-01-01
- Volume
- 30
- Issue
- 4
- Pages
- 849-853
- ISSN
- 0586-7614 (ISSN-L)
- 1745-1701
- OpenAlex
- W2166890298
- Cited by
- 23
- References
- 11
- Citations by year
- 2024: 3 · 2021: 4 · 2020: 4 · 2019: 1 · 2017: 3 · 2016: 1 · 2014: 1 · 2013: 1 · 2012: 1
- FWCI
- 0.42
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Schizophrenia Bulletin (publishedVersion)
- PubMed (publishedVersion)
- Griffith Research Online (submittedVersion)
- Topics
- Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
- Social Sciences › Psychology › Social Psychology › Mental Health Treatment and Access
- Health Sciences › Medicine › Psychiatry and Mental health › Bipolar Disorder and Treatment
- Keywords
- schizophrenia
- MeSH terms
- Adult, Affect, Age Factors, Aged, Female, Humans, Male, Middle Aged, Psychotic Disorders, Schizophrenia, Age of Onset, International Classification of Diseases
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