Hi Frank, It clusters by twin, that is why in Dr. Lumley's example, the "id" was twin pair, not individual, and the SE is adjusted accordingly.
Cheers, Josh On Thu, Jul 5, 2012 at 12:10 PM, RFrank <spark...@gmail.com> wrote: > Thanks -- extremely helpful. But what is the mechanism by which this > analysis corrects for the fact that my subjects are clustered (twins)? > > -- > View this message in context: > http://r.789695.n4.nabble.com/GEE-with-Inverse-Probability-Weights-tp4633172p4635533.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > R-help@r-project.org 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. -- Joshua Wiley Ph.D. Student, Health Psychology Programmer Analyst II, Statistical Consulting Group University of California, Los Angeles https://joshuawiley.com/ ______________________________________________ R-help@r-project.org 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.
