Season of birth and schizophrenia - an equatorial study
- 1 August 1977
- journal article
- research article
- Published by Wiley in Acta Psychiatrica Scandinavica
- Vol. 56 (2), 143-146
- https://doi.org/10.1111/j.1600-0447.1977.tb06672.x
Abstract
Studies in the northern and southern hemisphers have generally demonstrated an association between schizophrenia and winter birth. No provious study has been performed in an equatorial region. The present study investigated the distribution of births of 3,508 schizophrenic patients born in the Philippines. A 15% excess above expectation was found for patients born in the coldest 3-month period of the year (December-February). An excess of births in that period was found in both sexes and in each decade of birth examined. The hypothesis that schizophrenics have a greater sensitivity to those physiological factors which determine conception in the general population is not supported.Keywords
This publication has 3 references indexed in Scilit:
- Mental Disorder and Season of Birth—A Southern Hemisphere StudyThe British Journal of Psychiatry, 1976
- Season of Birth in Man. Contemporary Situation with Special Reference to Europe and the Southern HemisphereEcology, 1966
- Season of BirthArchives of General Psychiatry, 1961