Does age incidence explain all season-of-birth effects in the literature?

Lewis (1989) has suggested that the effect of so-called age incidence on season-of-birth data may be a sufficient explanation of the anomalies found in many samples of schizophrenic patients. Various predictions made by Lewis do not agree, however, with data available from some of the sources he quo...

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Bibliographic Details
Published in:Schizophrenia bulletin 1990, Vol.16 (1), p.11-12
Main Author: Dalen, P.
Format: Article
Language:English
Subjects:
Adult
Age Differences
Age Factors
Aged
Bias
Cross-Sectional Studies
Epidemiology
Etiology
Human
Humans
Incidence
Life Tables
Middle Aged
Risk Factors
Schizophrenia
Schizophrenia - epidemiology
Schizophrenia - etiology
Schizophrenic Psychology
Seasonal Variations
Seasons
Citations: Items that cite this one
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Summary:Lewis (1989) has suggested that the effect of so-called age incidence on season-of-birth data may be a sufficient explanation of the anomalies found in many samples of schizophrenic patients. Various predictions made by Lewis do not agree, however, with data available from some of the sources he quoted. Age incidence can be a source of error when a small age difference has a considerable effect on the likelihood of being included in a sample. Depending on methods of ascertainment, this is unusual in empirical studies.
ISSN:0586-7614
1745-1701
DOI:10.1093/schbul/16.1.11