Document Detail

No season-of-birth effect in schizophrenic patients from a tropical island in the Southern Hemisphere.
MedLine Citation:
PMID:  8723312     Owner:  NLM     Status:  MEDLINE    
The distribution of birth rates was examined in 668 schizophrenic patients born in Réunion, a tropical French island in the Southern Hemisphere, and compared with that in the general local population. We failed to observe a significant season-of-birth effect, either in the total sample of schizophrenic patients or in subgroups categorized by gender, age, or family history of schizophrenia. Seasonal factors do not appear to affect the yearly distribution of births among schizophrenic patients on Réunion Island. It is nevertheless possible that environmental factors which are seasonal in countries with more contrasting climates have a continuous effect, throughout the whole year, in subtropical areas. Conversely, these findings provide some evidence against the hypothesis that there is an age-incidence artifact in seasonal studies from countries in the Northern Hemisphere.
T d'Amato; J M Guillaud-Bataille; T Rochet; M Jay; C Mercier; J L Terra; J Daléry
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Psychiatry research     Volume:  60     ISSN:  0165-1781     ISO Abbreviation:  Psychiatry Res     Publication Date:  1996 Mar 
Date Detail:
Created Date:  1996-10-17     Completed Date:  1996-10-17     Revised Date:  2008-04-17    
Medline Journal Info:
Nlm Unique ID:  7911385     Medline TA:  Psychiatry Res     Country:  IRELAND    
Other Details:
Languages:  eng     Pagination:  205-10     Citation Subset:  IM    
Hôpital du Vinatier, Lyon-Bron, France.
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MeSH Terms
Age Factors
Aged, 80 and over
Cohort Studies
Cross-Sectional Studies
Middle Aged
Psychiatric Status Rating Scales
Reunion / epidemiology
Risk Factors
Schizophrenia / diagnosis,  epidemiology*,  etiology,  genetics
Tropical Climate*

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

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