Hi there. I am wondering if you ever figured out this problem? I'm also working w/complex survey data and need to figure out how to account for a single primary sampling unit (PSU). The corresponding R code would be "options(survey.lonely.psu="adjust") or singleunit(centered) in Stata. Would need to be able to use this feature in proc surveyfreq or proc surveylogistic. Any help would be appreciated, thanks!
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