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From | Steven Samuels <sjsamuels@gmail.com> |
To | statalist@hsphsun2.harvard.edu |
Subject | Re: st: survey analysis : three-way table and use of "subpop" |
Date | Wed, 21 Sep 2011 18:31:57 -0400 |
One more time: make that "col"! Steve To get disease prevalence, I should have added the "row" option to the -svy: tab- commands. This is corrected below. S. <redacted>- Simplest is to use -svy: prop- ************************************************** svy: prop Diseased, over(Age Gender Race) ************************************************* The results list categories like _subpop_1, _subpop_2, but show a legend so that you know what is what. If prevalence is low, a lower confidence interval endpoint could fall below zero. In that case, you should use four instances of -svy: tab-, because -svy: tab- computes confidence intervals for the logit of a proportion, then transforms back. e.g. ****************************************************** svy, subpop(if Gender==0 & Race==0): tab Diseased Race, col svy, subpop(if Gender==0 & Race==1): tab Diseased Race, col etc. ****************************************************** Steve On Sep 20, 2011, at 11:55 PM, <redacted> wrote: Hi, I need help with svy analysis. I have 4 variables: 1) Diseased: yes=1 old=0 2) Gender: male=1 female=0 3) Age: young=1 old=0 4) Race: Malay=1 non-Malay=0 My svy command is : Svyset ebid [weight=weight4], strata(strata) fpc(fpc) Question: I want to produce this table. This table looks like a three-way table. ============================================================== Prevalence Prevalence Male Female Malay Mon malay Malay Non malay Agegp -young -old ============================================================== In a normal tabulate command, I can use "bysort gender: tabulate race age" but in svy command, how can I do this? Should I use “subpop” command, one time for male and the other time for female? will that be valid? Are there any other options? Svy, subpop(?): tab race age diseased * * 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/