Risk factors in schizophrenia: Season of birth, gender, and familial risk

A. E. Pulver, K. Y. Liang, C. H. Brown, P. Wolyniec, J. McGrath, L. Adler, D. Tam, W. T. Carpenter, B. Childs

Research output: Contribution to journalArticlepeer-review

54 Scopus citations


The risk for schizophrenia among first-degree relatives of schizophrenic probands obtained from an epidemiological sample using family history methods was examined to determine whether month of birth of the proband was associated with familial risk. The results of this study of the first-degree relatives of 106 female schizophrenics and 275 male schizophrenics suggested that the relatives of probands born in the months February to May had the highest risk, although the association between month of birth and familial risk among the male probands was present only for those relatives who had onset of schizophrenia before the age of 30.

Original languageEnglish (US)
Pages (from-to)65-71
Number of pages7
JournalBritish Journal of Psychiatry
Issue numberJAN.
StatePublished - 1992
Externally publishedYes

ASJC Scopus subject areas

  • Psychiatry and Mental health


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