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| From | Steve Samuels <sjsamuels@gmail.com> |
| To | statalist@hsphsun2.harvard.edu |
| Subject | Re: st: ANOVAs and Probability Weights |
| Date | Mon, 13 Feb 2012 17:45:06 -0500 |
ANOVA is equivalent to multiple regression on group indicators. So -svyset- the data with the design information (clusters, strata, weights), and use -svy: reg-. Note that hypothesis tests are not appropriate if you are interested in describing the particular finite population where the survey was done. For references, see: http://www.stata.com/statalist/archive/2011-09/msg01121.html. Instead, you can assess differences in means with confidence intervals. In the descriptive setting, get minimal standard errors by specifying the finite population correction, if non-negligible, in the -svyset- statement. ******************************************** sysuse auto, clear recode rep78 1/2=3 rename turn psu svyset psu [pw = weight], strata(foreign) svy: mean mpg, over(rep78) // no covariates: xi: svy: reg mpg i.rep78 // F test testparm _Irep78* //same test _Irep78_4 _Irep78_5 , mtest(sidak) // with covariates: xi: svy: reg mpg i.rep78 length ******************************************** Steve sjsamuels@gmail.com On Feb 12, 2012, at 8:58 PM, dstrike1@juno.com wrote: Greetings Stata Aficionados! I would like to do some group means tests with a survey data set which includes final and replicate weights. Could someone please direct me as to how I might perform "weighted" ANOVAs with such a data set using Stata 10. Kind regards, Don Stryker ____________________________________________________________ 53 Year Old Mom Looks 33 The Stunning Results of Her Wrinkle Trick Has Botox Doctors Worried http://thirdpartyoffers.juno.com/TGL3141/4f386e5a711ea10ce506st01vuc * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/ * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/