At 02:37 PM 4/23/2004 -0700, Maoyong Fan wrote:
use pdp_matching.dta, clear
...
Please find the data on:
http://are.berkeley.edu/~fan/imbens/
First off, the data set on this web page has a different name - 
pdp_discuss.dta.  So, is this the right file?  Assuming it is, I ran your 
do file in both Stata 7 and Stata 8, and no obvious differences stick out 
at me -- the resulting file has 92 cases and 44 variables.  But, perhaps I 
overlook something.  Could you either (a) provide the correct data file, or 
(b) be more specific as to what it is that comes out 
different?  (Incidentally, I had to convert that file from Stata 8 to Stata 
7 format, so I am guessing it is not the right file, as you wouldn't be 
able to run it in both versions of Stata.)
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Richard Williams, Notre Dame Dept of Sociology
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