What software packages allow me to properly account for the WERS sample design (both through weighting and correct estimation of standard errors)?
Stata and SPSS are the most commonly used software packages among WERS analysts. Both allow for the application of weights and for the correct estimation of standard errors. However, both employ special procedures to do so. In Stata, these procedures have the prefix svy and are described in the dedicated Stata 9 Reference Manual on Survey Data. The svy procedures are part of the standard software package from Version 5.0 onwards. In SPSS, the procedures are contained within a separate module called Complex Samples which is available as an add-on to the standard Base module from Version 12.0 onwards. Note: Both Stata and SPSS also allow users to apply weights when using statistical procedures that do not simultaneously produce correct variance estimates. The specification of iweights in Stata, and the use of the WEIGHT BY command in SPSS, will weight the data appropriately, ensuring unbiased coefficients. However, the standard errors arising from any statistical commands issued under th
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