st: program to measure missing values of one variable against others

[David Kantor <dkantor@jhu.edu>]

Hi.

I will need a program to take a varlist, and for each variable, see how 
badly it is populated with missing values with respect to all the others.

The purpose is to see which variables are the spoilers -- the ones that 
cause the most damage in terms of limiting the usable set of observations 
in an analysis.  Thus, it is not enough to say that x has 98 missing 
values. If they are mostly the same cases as have missing values in other 
variables, then it's not a problem. If they are largely in cases different 
from those with missing values in other variables, then it is a problem.

I can do this with not too much effort, but I ask in case someone knows of 
an existing program for this purpose. (Or is there something in standard 
Stata?)

Thanks to anyone with suggestions.
-- David

David Kantor
Institute for Policy Studies
Johns Hopkins University
dkantor@jhu.edu
410-516-5404

*
*   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/