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Re: st: Fw: PROPORTIONAL T TEST WITH OVERLAPPING


From   Steven Samuels <[email protected]>
To   [email protected]
Subject   Re: st: Fw: PROPORTIONAL T TEST WITH OVERLAPPING
Date   Fri, 13 Apr 2007 18:31:00 -0400

McNemar's test is the standard test of this hypothesis. Do a search on "mcnemar" to find Stata's implementations & other information. There is an "exact" version.

Steven

On Apr 13, 2007, at 5:55 PM, keesman wrote:


Hi,

I want to do a proportional t test with overlapping data (see below). Official Stata doesn't have this option for their proportion test. The statistical package Quantum has a proportional t test with an overlapping option. The overlapping option adjusts the results to allow for overlapping.

For example:

Each person is asked if they use BrandA and then a second question do they use BrandB

1 yes and 0 no

Id BrandA BrandB
1 1 0
2 1 1
3 1 0
4 0 0
5 1 1
6 0 1
7 0 1
8 1 1
9 1 0
10 1 1

I wish to determine if the proportion of BrandA is significantly different from BrandB (taking into account overlapping).

I'm eager to know if there is any Stata program that does this or if there is a reference to this procedure.
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