Seasonality of first admissions for schizophrenia in the Southern Hemisphere

Davies, G., Ahmad, F., Chant, D. C., Welham, J. and McGrath, J. J. (2000). Seasonality of first admissions for schizophrenia in the Southern Hemisphere. In: L. E. DeLisl, Schizophrenia Research : Abstracts of Tenth Biennial Winter Workshop on Schizophrenia - Special Issue. Tenth Biennial Winter Workshop on Schizophrenia, Davos, Switzerland, (63-63). 5th - 11th February, 2000. doi:10.1016/S0920-9964(00)90440-7


Author Davies, G.
Ahmad, F.
Chant, D. C.
Welham, J.
McGrath, J. J.
Title of paper Seasonality of first admissions for schizophrenia in the Southern Hemisphere
Conference name Tenth Biennial Winter Workshop on Schizophrenia
Conference location Davos, Switzerland
Conference dates 5th - 11th February, 2000
Proceedings title Schizophrenia Research : Abstracts of Tenth Biennial Winter Workshop on Schizophrenia - Special Issue   Check publisher's open access policy
Journal name Schizophrenia Research   Check publisher's open access policy
Place of Publication Amsterdam
Publisher Elsevier Science
Publication Year 2000
DOI 10.1016/S0920-9964(00)90440-7
ISSN 0920-9964
Editor L. E. DeLisl
Volume 41
Issue 1
Start page 63
End page 63
Total pages 1
Language eng
Abstract/Summary Northern Hemisphere studies of first admissions for schizophrenia have shown an excess of summer admissions (June, July and August) compared to other times of the year. The within-year fluctuations in first admissions could be related to meteorological factors that fluctuate between seasons (e.g. temperature, photoperiod) and/or social factors (e.g. holidays, religious events). If meteorological factors were primarily responsible for the fluctuation, then Southern Hemisphere studies should find excess first admissions in December, January and February. This paper presents the first season of first admission study of schizophrenia in the Southern Hemisphere. The month and year of first admission for schizophrenia (ICD 8/9) for 4487 male and 3252 female, Australian-born individuals were extracted from a Queensland mental health register. Spectral analysis showed a strong annual periodicity of first admissions for males with the peak in August (Southern Hemisphere winter) and a trough in the summer months (December to February). The pattern for females also displayed annual periodicity. These results correspond to the Northern Hemisphere reports of excess of schizophrenia first admissions in terms of the month of the year but not the season of excess. Further work is needed in order to clarify the impact of latitude and meteorological factors on the month of first admission for schizophrenia.
Subjects E3
730211 Mental health
Q-Index Code E3

Document type: Conference Paper
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Created: Sat, 07 Jun 2008, 00:32:12 EST