Hi, Anyone knows any existing package/program that has implemented unbiased (or bias-reduced) sandwich variance estimator (Wu (1986) and Carroll (2001) for GEE estimates?
Thanks Qiong ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
