Re: [R] Marginal effects in negative binomial

2008-10-28 Thread John Fox
25 AM > To: r-help@r-project.org > Subject: [R] Marginal effects in negative binomial > > Dear All, > > I carry out negative binomial estimations using the glm.nb command from the > MASS package. > Is there a command or a simple procedure for computing marginal effects from &g

[R] Marginal effects in negative binomial

2008-10-28 Thread Roberto Patuelli
Dear All, I carry out negative binomial estimations using the glm.nb command from the MASS package. Is there a command or a simple procedure for computing marginal effects from a glm.nb fitted object? If these are the same as for a Poisson fitted object (glm), my question remains how to compute