Thank you, guys. I merged strata and fitted my model.
On Wed, Apr 16, 2014 at 5:33 PM, Thomas Lumley <tlum...@uw.edu> wrote: > > On Tue, Apr 15, 2014 at 7:07 AM, Milan Bouchet-Valat <nalimi...@club.fr>wrote: > >> Le lundi 14 avril 2014 à 13:59 -0400, Hanze Zhang a écrit : >> > Hi, >> > >> > I want to do logistic regression based on a complex sample design. I >> used >> > package survey, but when I ran svyglm, an error message came out: >> > Error in onestrat(x[index, , drop = FALSE], clusters[index], >> > nPSU[index][1], : >> > Stratum (16) has only one PSU at stage 1 >> > >> <snip> >> >> > How to solve this issue? Thank you. >> You need to merge manually the stratum with only one PSU with another >> stratum. See 3.2.1 in http://books.google.fr/books?id=L96ludyhFBsC >> (look for "single" in the whole book to find it). >> >> > Or set options(survey.lonely.psu) to one of the other values. But merging > strata is probably better. > > -thomas > > -- > Thomas Lumley > Professor of Biostatistics > University of Auckland > [[alternative HTML version deleted]]
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