On Wed, 19 Feb 2003 [EMAIL PROTECTED] wrote:
> Hi,
> is there a way to analyze subpopulations (e.g. women over 50, those who
> answered "yes" to a particular question) in a survey using Survey package?
> Other packages (e.g. Stata, SUDAAN) do this with a subpopulation option to
> identify the subpopulation for which the analysis shoud be done. I did not
> see this option in the Survey package. Is there another way to do this?
>
Ok, there is a new version of survey (1.1) that will appear on CRAN over
the next few days that handles subsets as subpopulations in the sense used
by Stata. There is a function subset.survey.design that makes it easy to
select subsets, eg
black<-subset(dnhanes, race==1)
but subsets resulting from dropping NAs or from the subset argument to
svyglm or svycoxph are handled the same way.
-thomas
Thomas Lumley Asst. Professor, Biostatistics
[EMAIL PROTECTED] University of Washington, Seattle
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