University of Tasmania
Browse

Seasonality of Mania: a Tasmanian study

Version 2 2024-10-28, 04:08
Version 1 2023-05-16, 09:46
journal contribution
posted on 2024-10-28, 04:08 authored by Ivor JonesIvor Jones, H Hornsby, D Hay
Objective: The aim of the study was to examine the seasonal incidence of mania in a new Southern Hemisphere location. Method: Using the Tasmanian psychiatric database, monthly admission rates were compared with expected admission rates for mania for the period 1983 to 1989. ICD-9 criteria for mania single episode (296.0) and mania recurrent episodes (296.1) were used, excluding individuals with a bipolar disorder (296.4 to 296.89). Results: One thousand three hundred and twenty-eight persons were admitted during this period. There was a significant monthly variation with admissions occurring most commonly in the summer, but this was not consistent during the seven year period. Conclusions: There was a statistically significant but inconstant summer excess. The inconstancy of the finding suggests that the phenomenon is not a simple consequence of light duration, and closer examination of these inconsistencies may lead to further elucidation of the phenomenon.

History

Publication title

Australian and New Zealand Journal of Psychiatry

Volume

29

Issue

3

Pagination

449-453

ISSN

0004-8674

Department/School

Medicine

Publisher

Blackwell Publishing Asia

Publication status

  • Published

Place of publication

54 University St, P O Box 378, Carlton, Australia, Victoria, 3053

Socio-economic Objectives

209999 Other health not elsewhere classified

Usage metrics

    University Of Tasmania

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC