Document Detail

Season of birth and schizophrenia: southern hemisphere data.
MedLine Citation:
PMID:  8811264     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: The association between winter birth and increased incidence of schizophrenia is well documented in the northern hemisphere. The present study examined season of birth and schizophrenia in a southern hemisphere population from a mild temperate climate. METHOD: The seasonal incidence of birth in schizophrenic patients was compared, using Chi-squared tests, to normative population birth rates. RESULTS: A statistically significant seasonal pattern, with a peak in late spring and early summer, was obtained. CONCLUSION: This supports northern hemisphere findings regarding calendar month, but not season, of excess schizophrenic births. This has implications for viral and other aetiological hypotheses dependent on meteorological factors.
M Berk; M J Terre-Blanche; C Maude; M D Lucas; M Mendelsohn; A J O'Neill-Kerr
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  The Australian and New Zealand journal of psychiatry     Volume:  30     ISSN:  0004-8674     ISO Abbreviation:  Aust N Z J Psychiatry     Publication Date:  1996 Apr 
Date Detail:
Created Date:  1996-12-27     Completed Date:  1996-12-27     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0111052     Medline TA:  Aust N Z J Psychiatry     Country:  AUSTRALIA    
Other Details:
Languages:  eng     Pagination:  220-2     Citation Subset:  IM    
Department of Psychiatry, University of the Witwatersrand Medical School, Parktown, Johannesburg, South Africa.
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MeSH Terms
Birth Rate
Cross-Cultural Comparison*
Cross-Sectional Studies
Infant, Newborn
Prenatal Exposure Delayed Effects*
Retrospective Studies
Risk Factors
Schizophrenia / epidemiology*,  etiology
South Africa / epidemiology
Comment In:
Aust N Z J Psychiatry. 1997 Apr;31(2):308-9   [PMID:  9140645 ]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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