On Thu, 23 Nov 2000, Ray Webster wrote:
> Has anyone written functions for inverse prediction for logitistic or probit
> regression models? I'm fitting dose-response models, where the
> response is whether the subject dies or not. (The subject is an exotic
> pest species, by the way.) We'd like to be able to obtain estimated LCXs
> - the concentration at which X% of the population dies - and confidence
> intervals for these.
Bill Venables has: see library(MASS) and specifically dose.p.
--
Brian D. Ripley, ripley@stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272860 (secr)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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