Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1977-1-25
pubmed:abstractText
Many studies have shown schizophrenics to be born with unusual frequency in the period January-April, and one interpretation of this seasonality of birth is that the parents of schizophrenics have an unusually strong general tendency to conceive offspring who will be born in January-April. This parental conception habits interpretation may be tested by studying whether the siblings of schizophrenics are also born with increased frequency in January-April. The present study investigated the season of birth of 288 full siblings and 44 half-siblings in 91 families of male schizophrenics. Approximately 5% of the siblings were known to be schizophrenic; with the schizophrenic siblings excluded from the analyses, the full siblings showed a birth pattern much closer (nonsignificant) to that of the schizophrenics than to that of the general population. Half-siblings showed January-April birth rates at or below the population level. Although the mechanisms responsible for the current results still remain unclear, the study suggests that seasonality of births of schizophrenics may be related to the parents' conception habits as well as to an etiological or triggering effect on the development of schizophrenia in the offspring.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0001-690X
pubmed:author
pubmed:issnType
Print
pubmed:volume
54
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
267-74
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:year
1976
pubmed:articleTitle
Season of birth among siblings of schizophrenics. A test of the parental conception habits interpretation.
pubmed:publicationType
Journal Article