Studying seasonality by using sine and cosine functions in regression analysis

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Studying seasonality by using sine and cosine functions in regression analysis.

STUDY OBJECTIVE A statistical test that allows for adjustment of confounding can be helpful for the study of seasonal patterns. The aim of this article is to supply a detailed description of such a method. An example of its application is given. DESIGN A statistical test is presented that retains the information on the connection of time periods by describing the seasonal pattern as one sine ...

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ژورنال

عنوان ژورنال: Journal of Epidemiology & Community Health

سال: 1999

ISSN: 0143-005X

DOI: 10.1136/jech.53.4.235