Hello Everybody:
 
I am searching for an R package for fitting Generalized Estimating Equations (GEE) with weights (i.e. Weighted Estimating Equations). From the R documentation I found "geese(geepack)" for fitting Generalized Estimating Equations. In this documentation, under the paragraph “weights” it has been written, “an optional vector of weights to be used in the fitting process. The length of weights should be the same as the number of observations. This weights is not (yet) the weight as in sas proc genmod, and hence is not recommended to use.” Now my question is, is there any other package you know that might allow me to fit GEE with weight option and the results would be same as SAS PROC GENMOD with weights? Any help would be sincerely appreciated. 
 
Thank you very much. 
 
Sincerely, 
 
Abdus Sattar
University of Pittsburgh
Email: mas196@pitt.edu


 
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