Arafat;

You should listen to Umesh rather than myself on this point, and i  
should refrain from posting after my bedtime. I should have typed "glm".

-- 
David Winsemius

On Mar 25, 2009, at 12:37 AM, Umesh Srinivasan wrote:

> Hi,
>
> Not exactly sure what you mean, but if you want to run a poisson  
> regression and then look at the coefficients, then this is what you  
> need:
>
> poisson.model <- glm(response ~ predictor, family = "poisson")
>
> summary(poisson.model)
>
> Will give you the intercept and slope. Since poisson regression uses  
> a log link to model data linearly, the coefficients are in the log  
> scale.
>
> Cheers,
> Umesh
>
> On Wed, Mar 25, 2009 at 4:20 AM, David Winsemius <dwinsemius@comcast.net 
> > wrote:
> Consider: gls with family="poisson"
>
>
>
> On Mar 24, 2009, at 1:26 PM, Arafat Ud Zaman wrote:
>
> Dear sir,
> I want to know about R command for parameter estimation for  
> generalized
> Poisson regression.
>
> yours faithfully
>
> Arafat Ud Zaman
> 4th year(Hons)
> Applied statistics
> University of Dhaka
> Mob- +8801715173176
>

David Winsemius, MD
Heritage Laboratories
West Hartford, CT


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