Thanks everyone for the advice, you raise interesting points. Maybe the
best thing for me to do is do an ANOVA in R with binomial data (if
possible) and find the lowest dose that gives a significant difference from
the controls.

On Mon, Apr 2, 2012 at 2:45 PM, Danielle Duncan <dlduncan2@alaska.edu>wrote:

> Hello, I used the glm function in R to fit a dose-response relationship
> and then have been using dose.p to calculate the LC50, however I would like
> to calculate the NOEL (no observed effect level), ie the lowest dose above
> which responses start occurring. Does anyone know how to do this?




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