Bookmark and Share

Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist.org.


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: st: RE: RE: estimation with a time trend.


From   Maarten buis <[email protected]>
To   [email protected]
Subject   Re: st: RE: RE: estimation with a time trend.
Date   Mon, 5 Jul 2010 09:22:22 -0700 (PDT)

--- On Mon, 5/7/10, natasha agarwal wrote:
> The results with the time dummies showed that the
> estimated coefficients on the time dummies was
> increasing over time.
> 
> So I decided to introduce one a time variable like a trend
> which is shown as before.

OK, in your fixed effects model without interactions you 
could just as well have used your original year variable
as it is demeaned anyhow. 

In general, it is good practice to make sure that the value
0 happens at a meaningful point in time, but you should
not use -egen group()- for that, rather you should just
subtract your  'midpoint' or 'reference year'.

-- Maarten

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

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


      

*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/


© Copyright 1996–2018 StataCorp LLC   |   Terms of use   |   Privacy   |   Contact us   |   Site index