[R] help help help

paola.distefano@libero.it paola.distefano at libero.it
Tue Jan 27 10:40:12 CET 2004

I have a problem....
I need help about Generalized Estimating Equation. The response variable is "efficacy" (numeric) and the predictors are "eziology" (categoric) and "terapy" (string).
After downloaded the gee from CRAN I tried to use this procedure for example:

summary(gee(efficacy~eziology+terapy, id=?, data=pippo, corstr="exchangeable"))

Could you send me an example of application of GEE with two variables?
Thank you very much

Paola Di Stefano

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