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st: RE: Forcing stata to use a non-updated command

From   TEWODAJ MOGUES <[email protected]>
To   Stata _ <[email protected]>
Subject   st: RE: Forcing stata to use a non-updated command
Date   Fri, 28 Jan 2005 16:16:50 -0500

Hi Nick,

My objective was only to understand whether the differences in my 
results were Stata upgrade related or data-changes related. I am not 
sure why Stata 7 is now giving different results than it used to. I 
don't know, maybe when xtabond was fixed in Stata8, updating xtabond 
in Stata 7 also results in replacing xtabond with its corrected 
version. I may well have done this updating of Stata 7 in the past. In 
any case, I have returned the official ado files to their original 
folders, so no harm done. Thanks for the cloning idea.


Message: 14        
   Date: Fri, 28 Jan 2005 17:37:01 -0000
   From: "Nick Cox" <[email protected]>
Subject: st: RE: Forcing stata to use a non-updated command

As often pointed out on this list, it is 
not a good idea to mess around with 
official Stata ado files, even if you 
think you know exactly what you're doing. 

Also, you seem to be assuming that 
an error recently reported will be 
fixed retrospectively for Stata 7. 
That is not the case. Stata 7 
is history, especially so far as updates and fixes
are concerned, although StataCorp 
will continue to provide tech support
to registered users. In some cases, 
perhaps this one, that tech support 
might consist of advising you that
the problem was fixed in Stata 8, 
and so you would be advised to upgrade. 
This is a brutal question, as people 
who pay to upgrade don't want to see 
scarce Stata resources devoted to 
maintaining dead versions. 

Anyway, I would have cloned -xtabond- under 
another name if this were an issue under
Stata 8, but if my diagnosis is correct, 
the -xtabond- you are using will be 
exactly what it was, so only under 
Stata 8, or through your programming, 
will you able to explore the issue. 

[email protected] 

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