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Subject: glmfit binomial-probit with natural mortality
Date: Fri, 1 Aug 2008 17:55:04 +0000 (UTC)
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Hi

I'm trying to fit a generalized linear model (GLM) with the
glmfit function. My problem deals with the
dose-response(Mortality)of a population of animals exposed
to a toxic agent. The most common models for this type of
regression use the binomial distribution and probit or logit
as link functions with the log(Dose) as predictors. The data
I'm working with shows a non zero response for the controls
(dose equal to zero). I think that the logit or probit
functions can not accommodate for this type type behavior
since they go from zero to one. Is there a way to make
glmfit to take into account the controls correction (natural
mortality) or there is any other feasible way to do it in
MATLAB?

Thanks in advance.