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Re: st: From: Tahnia Ahmad <[email protected]>


From   Austin Nichols <[email protected]>
To   [email protected]
Subject   Re: st: From: Tahnia Ahmad <[email protected]>
Date   Wed, 10 Jul 2013 17:12:25 -0400

Tahnia Ahmad <[email protected]>:
You can run a logit regression of one dummy variable on the other, i.e.
 logit readm care, or
and you do not need equal samples of 0/1 for care.

But that is not measuring the causal effect unless care bundles were
randomly given to 340/389 patients.
Imagine if they don't give bundles only to people who are clearly about to die.
See
http://www.stata-journal.com/article.html?article=st0136
for more.

On Wed, Jul 10, 2013 at 5:06 PM,  Tahnia Ahmad <[email protected]> wrote:
> Hi everyone,
>
> I have two logistic variables.
> Variable 1: Patient received a care bundle (Yes/No)
> Variable 2: If patient was readmitted within 30 days(Yes/No)
>
> I want to find out the effect (if there is any) of patient's receiving the
> bundle on their 30 days readmission.
>
> Should I use logistic regression? If not, what else can I use to find the
> effect (int terms or odd ratio). Also, in the sample, there are 340
> patients who received the bundle, only 49 who didn't. Do I need to have
> equal sample sizes to make a fair comparison?
>
> Thank you for your help.
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