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...h" library already adjusted for clustering. In my situation, however, I only have a weight variable. I hope someone can clarify this problem for me. Thanks, Carlos -- View this message in context: http://r.789695.n4.nabble.com/correct-standard-errors-heteroskedasticity-using-survey-design-tp4560122p4560122.html Sent from the R help mailing list archive at Nabble.com.