Stata The Stata listserver
[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]

st: RE: Reshape or other approach for multiple-response data


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: Reshape or other approach for multiple-response data
Date   Wed, 13 Apr 2005 20:21:48 +0100

There is a rather long FAQ on this by Ulrich 
Kohler and friend at 

How do I deal with multiple responses?
http://www.stata.com/support/faqs/data/multresp.html

and also a long discussion based on the 
same material in 

On structure & shape: the case of multiple responses. 
Stata Journal 3(1): 81--99 (2003) 

The first will be accessible to you even 
if the second one isn't. 

I suggest that you read either. 

While you're it, you should check out 
Ben Jann's substantial contributions to this field, 

Tabulation of multiple responses. 
Stata Journal 5(1): 92--122 (2005) 

The software is downloadable without subscription
to the Stata Journal. 

Finally, there are some utilities in -tab_chi- 
on SSC. To some extent, those (and Ben's commands) 
allow descriptive analyses of multiple response data 
without any -reshape-, as the programs do it for you on the fly. 

Note that in an -update-d Stata 

. search multiple response 

would have pointed to all but the last of 
these (-tab_chi-). 

Besides that, you clearly should consider 
subscribing to the Stata Journal (or reading 
it!). 

Nick 
n.j.cox@durham.ac.uk 

Arnold H. Levinson, Ph.D.

> I have a long dataset with variables that allow multiple responses per
> subject. So it looks like:
> 
> ID    var1    var2
> 1        3        5
> 1        2        .
> 2        3        4
> 2        .        5
> etc.
> Reshape doesn't like multiple responses for a single 
> variable. What's the
> most efficient way of reshaping to wide, with each variable becoming a
> response-specific dummy, i.e., var1_1, var1_2, etc.
 

*
*   For searches and help try:
*   http://www.stata.com/support/faqs/res/findit.html
*   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   |   What's new   |   Site index