A reference to Boschloo would be most welcome
Tony
Peter A. Lachenbruch
Department of Public Health
Oregon State University
Corvallis, OR 97330
Phone: 541-737-3832
FAX: 541-737-4001
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Eva Poen
Sent: Thursday, January 22, 2009 12:56 AM
To: [email protected]
Subject: Re: st: RE: comparing proportions
Paul,
If you are looking for an alternative to Fisher's test:
I recently wrote a routine for Boschloo's test, which is an
unconditional test and uniformely more powerful than Fisher's. I can
send it to you if you want.
However, both commands have the syntax
<command name> var1 var2 [if] [in] [,....]
Though I can't see why you would want to insist on the form
<command name> var1 , by(var2)
since the data structure has to be the same for both (two dummy
variables, var1 and var2). Note that both the built-in -tabulate ..,
exact- and my own -boschloo- command come with immediate versions,
where you can provide the cells of the contingency table on the
command line and don't need any data in memory at all.
HTH,
Eva
2009/1/21 Anderson, Bradley <[email protected]>:
> How about Fisher's exact test for the corresponding 2 x 2 contingency
table.
>
> -----Original Message-----
> From: [email protected]
[mailto:[email protected]] On Behalf Of Visintainer
PhD, Paul
> Sent: Wednesday, January 21, 2009 2:41 PM
> To: [email protected]
> Subject: st: comparing proportions
>
> I'm drawing a blank on a command for comparing two independent
binomial distributions, but the command has to be in the form of:
>
> <command> var1, by(group)
>
> For example, comparing a yes/no variable by gender.
>
> -prtest- is the right form, but I would prefer not using the
large-sample approximation (sample size is small for several variables).
>
> I suppose -exlogistic- would work, but it seems like a very big hammer
for such a small nail.
>
> Thanks
>
> -p
>
>
>
> _____________________
> Paul F. Visintainer, PhD
> [email protected]
>
>
>
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