<>
It does not matter whether you use logs or not. -denton- forces the
constructed quarterly estimates to add up to the annual estimate.
Whether you express the annual estimate in log or level terms does not
affect that algebra.
You can only use one indicator, but if you had more than one, you
could combine them with principal components. If you had three, form
the principal components of those three variables and use the first
one as the indicator.
Kit Baum | Boston College Economics & DIW Berlin | http://ideas.repec.org/e/pba1.html
An Introduction to Stata Programming
| http://www.stata-press.com/books/isp.html
An Introduction to Modern Econometrics Using Stata | http://www.stata-press.com/books/imeus.html
On Apr 30, 2009, at 02:33 , statalist-digest wrote:
I found this old post on the web that seems to help me on the
question I sent yesterday - I need to interpolate GDP data from a
quarterly to a monthly frequency.
I have downloaded the -denton- command and used it. I am however not
sure my results are correct. I am using an index of industrial
production as an indicator.
Shall I express GDP and industrial production in logs or not when
using denton? Or are the results to denton independent of whether
the variables are in logs or not?
Also, it appears that only one indicator can be used. Is there a way
to use two different indicators?
*
* 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/
