[R-SIG-Mac] GEE correlation

Kasper Daniel Hansen khansen at stat.Berkeley.EDU
Thu Mar 27 02:27:34 CET 2008

Write to the package maintainer or the author to ask about this.


On Mar 26, 2008, at 6:02 PM, Cameron Redsell-Montgomerie wrote:

> I am currently writing a paper comparing various packages in
> different programs, and how they handle GEE. I was wondering if you
> could help me out a bit.
> Beyond the options included in each package, I've noticed a variance
> in the various estimates and standard errors for most working
> correlation options between packages. The most is observed in
> Unstructured, and none in independence obviously. From what I've been
> able to gather the difference is coming from how the working
> correlations are calculated. I'm betting it's coming from the
> residuals being used. SAS for instance uses the Pearson Residuals.
> I was wondering if you could tell me how geepack or gee calculates
> correlation.
> Could you also include full citation for yourself so I can properly
> cite you,
> Thank you Very Much,
> Cameron Redsell-Montgomerie
> MSc Statistics
> University of Guelph
> MACN rm:501
> credsell at uoguelph.ca
> 	[[alternative HTML version deleted]]
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