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Power and sample size calculations for longitudinal studies estimating a main effect of a time-varying exposure

Existing study design formulas for longitudinal studies assume that the exposure is time invariant or that it varies in a manner that is controlled by design. However, in observational studies, the investigator does not control how exposure varies within subjects over time. Typically, a large number...

Täydet tiedot

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Bibliografiset tiedot
Päätekijät: Basagaña, Xavier, Liao, Xiaomei, Spiegelman, Donna
Aineistotyyppi: Artigo
Kieli:Inglês
Julkaistu: 2010
Aiheet:
Linkit:https://ncbi.nlm.nih.gov/pmc/articles/PMC3777279/
https://ncbi.nlm.nih.gov/pubmed/20547587
https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1177/0962280210371563
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