[R] NLME

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From: Abderrahim Oulhaj (abderrahim.oulhaj@pharmacology.oxford.ac.uk)
Date: Tue 25 May 2004 - 22:36:24 EST


Message-id: <013501c44254$e3f2c200$40ca01a3@optima.ox.ac.uk>

Hi everyone,

Does the selfstart function SSlogis of the "nlme" library allows the introduction of time varying covariates ?
For example how can I interpret the xmid parameter (reperesenting the age at which we reach the half of the asymptote) if I want to explain it by a some time varying covariate?

Thanks in adavance,

Abderrahim

Abderrahim Oulhaj, Phd in Statistics
Oxford University
Department of Pharmacology
Mansfield Road
Oxford OX1 3QT
Tel: +44 1865 224098
Fax: +44 1865 224099
Email: abderrahim.oulhaj@pharmacology.oxford.ac.uk

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