Bookmark and Share

Notice: On March 31, it was announced that Statalist is moving from an email list to a forum. The old list will shut down on April 23, and its replacement, statalist.org is already up and running.


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: st: Confounding using chest


From   Jennifer Calder <calderj@nyc.rr.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Confounding using chest
Date   Sun, 26 Feb 2012 12:24:00 -0500

The command that I downloaded was written by Wang.  Thanks for the link to the article, I'll review it.  I have to agree, have my doubts just based on the description included in STATA help.
This was very helpful
Sincerely,
Jennifer

On Feb 26, 2012, at 11:57 AM, Maarten Buis wrote:

> On Sun, Feb 26, 2012 at 5:05 AM, Jennifer Calder wrote:
>> I have been trying to use the chest command to check confounding in a binary logistic regression.   I am building the logistic regression using the purposeful selection.   I am not quite sure how chest is checking confounding or how the betas in the output table is calculated as well as how this program handles dummies, as I get as single coefficient  and percentage change in beta for dummy variables.
> 
> -chest- is user written, so per the Statalist FAQ you must say where
> you got it from. This requirement is not to annoy you, but to help you
> ask answerable questions. In case of user written software, there are
> often multiple versions floating around in cyber space, and it
> obviously helps when we are all talking about the same version.
> 
> To answer you question, did you read:
> 
> Zhiqiang Wang (2007) Two postestimation commands for assessing
> confounding effects in epidemiological studies. The Stata Journal,
> 7(2): 183-196.
> <http://www.stata-journal.com/article.html?article=st0124>
> 
> In general I am not too convinced by commands like these. The real
> issue is to distinguish between confounding and intervening variables
> and these kind of commands tend to distract from that.
> 
> Hope this helps,
> Maarten
> 
> --------------------------
> Maarten L. Buis
> Institut fuer Soziologie
> Universitaet Tuebingen
> Wilhelmstrasse 36
> 72074 Tuebingen
> Germany
> 
> 
> http://www.maartenbuis.nl
> --------------------------
> 
> *
> *   For searches and help try:
> *   http://www.stata.com/help.cgi?search
> *   http://www.stata.com/support/statalist/faq
> *   http://www.ats.ucla.edu/stat/stata/

Dr. Jennifer Calder






*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/


© Copyright 1996–2014 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   Site index