-tsappend, add(5)-
-xi: reg k i.country*year-
-predict khat-
Scott
On Tue, Aug 19, 2008 at 3:14 PM, kokootchke <[email protected]> wrote:
> Dear Stata users,
>
> I have a panel with 150 countries and years from 1965 to 1992. I have a variable "k", whose values by country I need to extrapolate to 1997. The problem is that I don't want to use the extrapolation method that Stata uses with the -ipolate- command. What I want is to run a regression of my variable k on a linear time trend by country, and then use the last "k" available for each country and the estimated beta to "forecast" the value of k for 1997.
>
> One problem, though, is that the availability of k differs by country. For some countries, it is available for the entire sample up to 1992; for others, it is available only until 1990 or 1991; for a few of them, the data are only available until 1985, for example.
>
> How can I extrapolate the values up to 1997 using this idea of a linear time trend and taking into account the data point for the last k available for each country?
>
> I am writing a very complicated program with lots of loops, which seems very inefficient and not too intuitive... and I'm sure there's a better way of doing this... any ideas?
>
*
* 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/
