Age-at-first-registration for affective psychosis and schizophrenia

Welham, Joy L., Thomis, Richard J. and McGrath, John J. (2004) Age-at-first-registration for affective psychosis and schizophrenia. Schizophrenia Bulletin, 30 4: 849-853.

Author Welham, Joy L.
Thomis, Richard J.
McGrath, John J.
Title Age-at-first-registration for affective psychosis and schizophrenia
Journal name Schizophrenia Bulletin   Check publisher's open access policy
ISSN 0586-7614
Publication date 2004
Sub-type Article (original research)
Volume 30
Issue 4
Start page 849
End page 853
Total pages 5
Place of publication United Kingdom
Publisher Oxford University Press
Language eng
Subject 1103 Clinical Sciences
1701 Psychology
1702 Cognitive Sciences
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.
Keyword Psychiatry
Affective Psychosis
Age At Onset
Gender Differences
Bipolar Disorder
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Medicine Publications
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 6 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 0 times in Scopus Article
Google Scholar Search Google Scholar
Created: Mon, 13 Aug 2007, 15:05:20 EST