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October 1, 1993Journal of Epidemiology & Community HealthOpen Access

Changing seasonality of birth--a possible environmental effect.

David W. Russell A. S. Douglas T.M. Allan

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Key Points

This research investigates how the seasonality of birth has changed over the past fifty years.
Time-series analysis conducted on 4,325,000 births in Scotland from 1938-1987.
Cosinor analysis fitted sine curve models to examine seasonal patterns.
Analysis of variance assessed the significance of identified seasonal peaks.
Main seasonal peak in births initially rose but declined by two-thirds after 1948-57.
Position of the primary peak shifted forward by two months over fifty years.
October peak showed slight rise in final decade, indicating increased relative importance.

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Implication

Time-series analysis reveals shifts in birth seasonality over five decades, suggesting environmental influences.

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Cite This Study

Russell et al. (1993) studied this question.

synapsesocial.com/papers/6a24186d6b441dc601adaebe https://doi.org/10.1136/jech.47.5.362

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