On Mon, 24 Nov 2008, Robert Wilkins wrote:
Hi,
Where can I find information ( freely available on the Internet , and also
books or other sources ) on how having sampling weights changes the
calculation of the standard error (of means and proportions)?
Alan Zaslavsky keeps a comprehensive list of software for complex surveys,
at
http://www.hcp.med.harvard.edu/statistics/survey-soft/
Although I'm biased, I think the 'survey' package in R is better than
either SPSS or SAS for this purpose. The main competition would be Stata
and the specialised packages such as SUDAAN and WesVar.
If you just want means and proportions, though, any of the software would
be perfectly adequate.
The PEAS project at Napier University has some nice introductory material,
although some of their software comparisons are a bit out of date:
http://www.napier.ac.uk/depts/fhls/peas/
-thomas
Thomas Lumley Assoc. Professor, Biostatistics
[EMAIL PROTECTED] University of Washington, Seattle
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