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From |
Nick Winter <nw53@cornell.edu> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: testing 2 proportions using svytab |

Date |
Fri, 18 Feb 2005 11:51:57 -0500 |

I thin kit would be equivalent to do:

. svymean dummy if cat4==1

. test dummy=0.5

And similarly for the other values of cat4. That is, if the two proportions are equal, then the mean of the dummy variable will be 0.5.

--Nick

At 10:02 AM 2/18/2005 -0500, you wrote:

--------------------------------------------------------Hello all, Hopefully I have solved this, but wanted to see if this made sense: I asked: > I am using svytab to look at different proportions of a 4 value > category by an indicator variable: > > svytab dummy cat4, row se > ------------------------------ > 1 2 3 4 > 0 a b c d > 1 e f g h > ------------------------------ > > test a==e, etc... > > I would like to test whether or not the row proportions for each > category of cat4 are significant from the opposite by indicator. I > assume I can do this using the standard error, but am unsure of how to > code this. after I : svytab dummy cat4, row format(%12.3f) se I can then test _b[p11]=_b[p21] test _b[p12]=_b[p22] .....etc Is this test valid (variance-wise) for a test that two proportions from the same survey are different, given the use of svytab? Other relevant posts include: http://www.stata.com/statalist/archive/2004-05/msg00975.html http://www.stata.com/statalist/archive/2002-10/msg00420.html Any help is appreciated, Dan * * For searches and help try: * http://www.stata.com/support/faqs/res/findit.html * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

Nicholas Winter 607.255.8819 t

Assistant Professor 607.255.4530 f

Department of Government nw53@cornell.edu e

308 White Hall falcon.arts.cornell.edu/nw53 w

Cornell University

Ithaca, NY 14853-4601

*

* For searches and help try:

* http://www.stata.com/support/faqs/res/findit.html

* http://www.stata.com/support/statalist/faq

* http://www.ats.ucla.edu/stat/stata/

**References**:**st: testing 2 proportions using svytab***From:*Daniel Egan <dp.egan@gmail.com>

**Re: st: testing 2 proportions using svytab***From:*Daniel Egan <dp.egan@gmail.com>

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