R packages - Sep 2009 - survey package (3.18)

Version 3.18 of the survey package is now percolating through CRAN.

Since the last announcement on this list, in February, the main additions are
  - standard errors for survival curves (both Kaplan-Meier and Cox model)
  - svyciprop() for confidence intervals on proportions, especially in small
samples or near 0 or 1.
  - predictive margins by direct standardization, with marginpred()
  - two-phase subsampling designs can now have arbitrary multistage designs at
each phase
  - Rao-Scott-type likelihood ratio tests are now available for glms and the Cox
model
  - a wide range of options for PPS designs without replacement

There is also experimental support for parallel processing using the
'multicore' package.

         -thomas

Thomas Lumley			Assoc. Professor, Biostatistics
tlumley at u.washington.edu	University of Washington, Seattle

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Does the survey package have a function similar to prop.test() Or is there a
way to use svyciprop() to perform a Chi-square test to see if the difference
in proportions is significant?

I'm comparing liberal congregations with conservative congregations in their
sponsorship of HIV/AIDS programs.  I want to test whether the proportion of
liberal congregations sponsoring a program is significantly different from
the proportion of conservative congregations sponsoring a program.

Thanks

Brad


Thomas Lumley wrote:
> 
> 
> Version 3.18 of the survey package is now percolating through CRAN.
> 
> Since the last announcement on this list, in February, the main additions
> are
>   - svyciprop() for confidence intervals on proportions, especially in
> small samples or near 0 or 1.
>          -thomas
> 
> Thomas Lumley			Assoc. Professor, Biostatistics
> tlumley at u.washington.edu	University of Washington, Seattle
> 
> _______________________________________________
> R-packages mailing list
> R-packages at r-project.org
> https://stat.ethz.ch/mailman/listinfo/r-packages
> 
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
> 
> 
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