Re: st: managing updates of stata

[Maarten buis <maartenbuis@yahoo.co.uk>]

--- On Tue, 1/3/11, Argyn Kuketayev wrote:
> is there a document, which would describe a recommended
> approach on managing updates to Stata?
> 
> let's say i'm developing a model using Stata. if i download
> the updates, it can change the results, the model coefficients
> etc. how would i be able to verify the results later? suppose
> on Jan 1st 2011 i updated Stata, regressed the model, got the 
> coefficients, and used to report financial results for Q4
> 2010. Now 2 years later, the internal audit wants to verify how
> I got the coefficients. How would I be able to reproduce the
> state of Stata software as of Jan 2011?

There is no such time-machine in a strict sense. Where I have seen
the bigest changes between versions of Stata was -ml- from Stata
10 to 11. In that case you can often get closer to the original 
results by using -version-. If it is really crucial to get exactly
the same results, and I can imagine that such an audit could be 
such a situation, then you could try to contact StataCorp directly.
My experience is that they are helpful people who will help you 
if they can. See: <http://www.stata.com/support/tech-support/>

What you could do in the future is when you create such a final
report you store a (zipped) copy of all directories returned by 
-sysdir- together with your other replication files.

Hope this helps,
Maarten

--------------------------
Maarten L. Buis
Institut fuer Soziologie
Universitaet Tuebingen
Wilhelmstrasse 36
72074 Tuebingen
Germany

http://www.maartenbuis.nl
--------------------------


      

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