st: High and Low Sample Selection

["Bromiley, Philip" <bromiley@uci.edu>]

I have a sample with two observations per industry - the highest
performer and the lowest performer.  I would like to explain performance
(or membership in the high/low category) with other variables.  

It appears to be a messy selection problem, but I'm not sure there's a
good solution. 

Any suggestions?

Phil


*
*   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/