[R] extract score vector and covariance matrix in glm package

David Winsemius dwinsemius at comcast.net
Mon Jan 24 05:30:32 CET 2011

On Jan 23, 2011, at 6:04 PM, Akram Khaleghei Ghosheh balagh wrote:

> Hello
> I am running a project but I encounter a problem . I would be happy
> to  receive help :
> problem:
> I have a binary dependent variable and some covariates logit(y)=a+bx 
> +cz .
> I   want to estimate the score vectors and their covariance by the  
> usage of
>   logit function and so glm in R .The vlaue of one of the  
> coefficient (
> like  b) is known previously and I want to extract a and c and  
> covariance
> matrix.

Several of your questions are answered on the help(glm) page (which  
also has worked examples). Fixed coefficients are handle with the  
offset arguments.

>   How could I do it?
> Thanks;
> 	[[alternative HTML version deleted]]
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David Winsemius, MD
Heritage Laboratories
West Hartford, CT

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