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Re: st: decimal places of P-values for testparm (and other commands)


From   Maarten buis <maartenbuis@yahoo.co.uk>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: decimal places of P-values for testparm (and other commands)
Date   Mon, 23 Jun 2008 13:01:04 +0100 (BST)

--- Clare Turnbull <Clare.Turnbull@icr.ac.uk> wrote:
> How can I have P-values presented acurately in exponential form (eg
> P=3.2e+08) or whatever, not rounded to 3 decimal places
> (eg P<0.000). 
> This would be particularly useful for using testparm, but for many
> many other commands as well

In case of -testparm-, see -return list-, or -di r(p)-. However, there
is a very good reason why Stata doesn't report these digits: no
empirical model will ever be precise enough for these digits to have
any meaning at all. So, although I have given you an answer I very
strongly recommend that you do not use it, these extra digits or
nothing other than random noise.  

-- Maarten


-----------------------------------------
Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands

visiting address:
Buitenveldertselaan 3 (Metropolitan), room Z434

+31 20 5986715

http://home.fsw.vu.nl/m.buis/
-----------------------------------------


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