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A smooth covariate rank transformation for use in regression models with a sigmoid dose–response function

We consider how to represent sigmoid-type regression relationships in a practical and parsimonious way. A pure sigmoid relationship has an asymptote at both ends of the range of a continuous covariate. Curves with a single asymptote are also important in practice. Many smoothers, such as fractional...

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Pubblicato in:Stata J
Autore principale: Royston, Patrick
Natura: Artigo
Lingua:Inglês
Pubblicazione: 2014
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Accesso online:https://ncbi.nlm.nih.gov/pmc/articles/PMC5663339/
https://ncbi.nlm.nih.gov/pubmed/29097908
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