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

Re: st: not repeating the 'if' command


From   Fred Wolfe <fwolfe@arthritis-research.org>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: not repeating the 'if' command
Date   Fri, 01 Aug 2003 13:13:35 -0500

At 02:04 PM 8/1/2003 -0400, you wrote:
I know that in SPSS there is way to set a filter for a series of commands using a 'do if' statement. Is there a way to do this in STATA? For example, I want to perform a large set of analyses on a set of groups (group == 1....group == 50). Do I have to continue to type if group == 1 after each command? ex:

tab race if group == 1
tab sex if group == 1
tab race sex if group == 1

tab race if group == 2
tab sex if group == 2
tab race sex if group == 2

or, is there a way to globally set off group == 1 for all analyses then a command to globally set off group == 2 for all analyses, and so on...? The above code seems too cumbersome.
There are a number of approaches you can use:

1) bys group: tab race * etc */

2) forvalues i = 1/ [put the highest value of group here]{
      */ all of your analyses here */
      tab race     if group == `i'
      tab sex      if group ==`i'
      tab race sex if group == `i'
}

Fred Wolfe




Fred Wolfe
National Data Bank for Rheumatic Diseases
Wichita, Kansas
Tel (316) 263-2125     Fax (316) 263-0761
fwolfe@arthritis-research.org


*
*   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