Document Detail

Fluctuations in schizophrenic births by year.
MedLine Citation:
PMID:  8968637     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: It has previously been reported that births of individuals who later develop schizophrenia vary by birth year. METHOD: Birth data were analysed on 34,024 individuals diagnosed with DSM-III-R disorganised, catatonic, and undifferentiated schizophrenia using time series analysis. RESULTS: Minor yearly fluctuations were observed but did not achieve statistical significance. Thus earlier findings reported in the literature could not be replicated using a different statistical approach. CONCLUSION: The findings do not support theories which assume major yearly fluctuations in the births of individuals with schizophrenia. Such theories include the perinatal effects of influenza, temperature variation, and the effects of severe weather.
E F Torrey; R R Rawlings
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The British journal of psychiatry : the journal of mental science     Volume:  169     ISSN:  0007-1250     ISO Abbreviation:  Br J Psychiatry     Publication Date:  1996 Dec 
Date Detail:
Created Date:  1997-04-02     Completed Date:  1997-04-02     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0342367     Medline TA:  Br J Psychiatry     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  772-5     Citation Subset:  IM    
National Institute of Mental Health, Neuroscience Center at St Elizabeths, Washington, DC 20032, USA.
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MeSH Terms
Birth Rate
Cross-Sectional Studies
Middle Aged
Prenatal Exposure Delayed Effects*
Risk Factors
Schizophrenia / classification,  epidemiology*,  etiology
United States / epidemiology

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