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Re: st: Testing for association


From   Nick Cox <njcoxstata@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Testing for association
Date   Mon, 26 Mar 2012 15:23:48 +0100

-chitest- and -chitesti- in -tab_chi- from SSC

Nick

On Mon, Mar 26, 2012 at 3:15 PM, Shittu, Aminu <ameen_vet@yahoo.com> wrote:

> Any Stata command for that, based on my data?

From: Nick Cox <njcoxstata@gmail.com>

> If you have a theory that says (e.g.) AA genotype should have fraction
> p positive and fraction (1 - p) negative, then that can be tested. It
> is testable e.g. by another chi-square test.

On Mon, Mar 26, 2012 at 2:20 PM, Shittu, Aminu <ameen_vet@yahoo.com> wrote:

> I have a genotype variable with 3 levels (AA, AC and CC); is there a
> way of testing for individual association of each genotype with the
> response variable ulcer status (positive and negative) of a patient?
> They are recorded in 2 separate columns though. I used "tab
> ulcerstatus genotype, col chi" and got the overall chi2 and p-value.
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