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GEE in Splus

To: "'s-news@lists.biostat.wustl.edu'" <s-news@lists.biostat.wustl.edu>
Subject: GEE in Splus
From: "Macneill, Stephanie J" <s.macneill@imperial.ac.uk>
Date: Fri, 27 Jun 2003 17:45:48 +0100
Hello. I have run into some problems running an old program in Splus and was
wondering if anyone could help.

A while I downloaded Vincent Carey's GEE program for Splus and used it to
run a series of analyses. I have recently returned to the data and have
tried to re-run analyses, but keep on getting error messages. I am trying to
run a model with unstructured correlation, binomial famimly and logit link.
Below is a simple version of the regression I am performing with just one
predictor, but I get the same error no matter how many variables I put in
the model.

>
test<-gee(test99[,2]~test99[,4],test99[,1],na.action=na.omit,family=binomial
,corstr="unstructured") 

[1] "Beginning Cgee S-function, @(#) geeformula.q 4.13 98/01/27"
[1] "running glm to get initial regression estimate"
[1] -2.078042029  0.009338763
Error in .C("Cgee",: "Cgee" is not a symbol in the load table
Dumped
Error was while calling subroutine "Cgee"



Am I doing something obviously wrong here? Is this a problem with GEE? As I
said, I haven't used the software in a long time, but I cannot even re-run
models that were run initially without any difficulty.

Many thanks for your help.

Kind regards,

Stephanie

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