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[S] a problem in S

To: s-news@wubios.wustl.edu
Subject: [S] a problem in S
From: monica lanzoni <monica.lanzoni@usa.net>
Date: 22 Apr 99 11:56:13 MET DST
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Good morning,
My name is Monica Lanzoni and I'm a statistician. I work at the National Cancer 
Institute of Milan (Italy).
I hope you'll understand my English  and I apologize to you.
 
I have a problem using S fitting an epidemiological additive model.

The model is   Ljk=Lj* + exp(a+xkß)  L= death rate

I have to make the fit using GLM function changing link function and the error.

I know that using program GLIM I can built my own link and error functions as 
macros. (see Breslow & Day - STATISTICAL METHODS IN CANCER RESEARCH, Vol.II, 
pp.175)
I would like to make the same in S but all my tries to make a family object or 
a link function were unsuccessful.

My colleague, Dr. Raffaella Artusi, sent a message to You last week for the 
same problem; if someone of yours is trying to solve it we'll wait your answer 
together.

Thank you very much.

        Dr Monica Lanzoni
 


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