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Risk Factors in Schizophrenia: Season of Birth in Maryland, USA

Published online by Cambridge University Press:  29 January 2018

Ann E. Pulver*
Affiliation:
University of Maryland School of Medicine, Maryland Psychiatric Research Centre P.O. Box 3235, Baltimore, Maryland 21228, USA and Department of Pediatrics, Johns Hopkins University School of Medicine
Walter Stewart
Affiliation:
University of Maryland School of Medicine, Maryland Psychiatric Research Center and Department of Epidemiology, Johns Hopkins University, School of Hygiene and Public Health
William T. Carpenter Jr.
Affiliation:
University of Maryland School of Medicine and Maryland Psychiatric Research Center
Barton Childs
Affiliation:
Department of Pediatrics, Johns Hopkins University School of Medicine
*
Correspondence.

Summary

The association between the risk for schizophrenia and season of birth was studied using a standard actuarial life table method. This method of analysis eliminates the possibility of the previously described statistical artifacts from the data. An increased risk for schizophrenia for winter born individuals was demonstrated. The analyses also supported the hypothesis that season of birth is associated with an increased risk for a subtype of schizophrenia.

Type
Research Article
Copyright
Copyright © 1983 The Royal College of Psychiatrists 

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References

Barry, H. III & Barry, H. Jr. (1964) Season of birth in schizophrenia: Its relation to social class. Archives of General Psychiatry, 11, 385–91.Google Scholar
Dalen, P. (1974) Season of Birth. A Study of Schizophrenia and Other Mental Disorders. Amsterdam: North Holland/American Elsevier.Google Scholar
Hare, E. H. (1978) Variations in the seasonal distribution of births of psychotic patients in England and Wales. British Journal of Psychiatry, 132, 155–8.CrossRefGoogle ScholarPubMed
Hare, E. H., Price, J. & Slater, E. (1974) Mental disorder and season of birth: A national sample compared with the general population. British Journal of Psychiatry, 124, 81–6.CrossRefGoogle ScholarPubMed
Kinney, D. K. & Jacobson, B. (1978) Environmental factors in schizophrenia: new adoption study evidence. In The Nature of Schizophrenia: New Approaches to Research and Treatment (eds. Wynne, L. C., Cromwell, R. L. and Matthysse, S.), pp 3851. New York: Wiley.Google Scholar
Lee, E. T. (1980) Statistical Methods for Survival Data Analysis, Belman 4, California: Lifetime Learning Publication.Google Scholar
Lewis, M. S. & Griffin, P. A. (1981) An explanation for the season of birth effect in schizophrenia and certain other diseases. Psychological Bulletin, 89, 589–96.Google Scholar
Norris, A. S. & Chowning, J. R. (1962) Season of birth and mental illness: a critical examination. Archives of General Psychiatry, 7, 207–12.Google Scholar
Parker, G. & Balsa, B. (1977) Season of birth and schizophrenia—an equatorial study. Acta Psychiatrica Scandinavica, 56, 143–6.CrossRefGoogle ScholarPubMed
Parker, G. & Neilson, M. (1976) Mental disorder and season of birth—a southern hemisphere study. British Journal of Psychiatry, 129, 355–61.Google Scholar
Peto, R. & Pike, M. C. et al (1977) Design and analysis of randomized clinical trials requiring prolonged observation of each patient. II. Analysis and examples. British Journal of Cancer, 35, 1, 139.Google Scholar
Pulver, A. E., Sawyer, J. W. & Childs, B. (1981) The association between season of birth and the risk for schizophrenia. American Journal of Epidemiology, 114, 735–49.CrossRefGoogle ScholarPubMed
Roche, S. D. & Dalen, P. (1974) In Season of Birth: A Study of Schizophrenia and other Mental Disorders. Amsterdam: North Holland.Google Scholar
Shensky, T. & Shur, E. (1982) Season of birth of schizophrenics: cyclic trends and their analysis. British Journal of Psychiatry, 141, 316–17.Google Scholar
Shur, E. (1982) Season of birth in high and low risk schizophrenics. British Journal of Psychiatry, 140, 410–15.Google Scholar
Strauss, J. S. & Carpenter, W. T. Jr. (1977) Prediction of outcome in schizophrenia. Archives of General Psychiatry, 34, 159–62.Google Scholar
Syme, G. J. & Illingworth, D. J. (1978) Sex differences in birth patterns of schizophrenics. Journal of Clinical Psychology, 34, 633–5.3.0.CO;2-9>CrossRefGoogle ScholarPubMed
Torrey, E. F. (1980) Schizophrenia and Civilization. New York: Aronson.Google Scholar
Torrey, E. F. & Torrey, B. B. (1980) Sex differences in the seasonality of schizophrenic births. British Journal of Psychiatry, 137, 101–4.Google Scholar
U.S. Department of Commerce, Vital Statistics of the U.S. (1944) Part 2. Natality and Mortality Data for the U.S. Tabulated by Place of Residence. Washington, D.C.: Government Printing Office, 1944.Google Scholar
U.S. Department of Commerce, Vital Statistics of the U.S. (1945) Part 2. Natality and Mortality Data for the U.S. Tabulated by Place of Residence. Washington, D.C.: U.S. Government Printing Office.Google Scholar
U.S. Department of Commerce, Vital Statistics of the U.S. (1946) Part 2. Natality and Mortality Data for the U.S. Tabulated by Place of Residence. Washington, D.C.: U.S. Government Printing Office.Google Scholar
U.S. Department of Commerce, Vital Statistics of the U.S. (1947) Part 2. Natality and Mortality Data for the U.S. Tabulated by Place of Residence. Washington, D.C.: U.S. Government Printing Office.Google Scholar
U.S. Department of Commerce, Vital Statistics of the U.S. (1948) Part 2. Natality and Mortality Data for the U.S. Tabulated by Place of Residence. Washington, D.C.: U.S. Government Printing Office.Google Scholar
Videbech, T., Weeke, A. & Dupont, A. (1974) Endogenous psychoses and season of birth. Acta Psychiatrica Scandinavica, 50, 202–28.Google Scholar
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