Bookmark and Share

Notice: On March 31, it was announced that Statalist is moving from an email list to a forum. The old list will shut down at the end of May, and its replacement, statalist.org is already up and running.


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

st: growth rate


From   "Lynn Lee" <lynn09v@gmail.com>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: growth rate
Date   Thu, 11 Oct 2012 09:57:16 +0800

Thank Nick, Quinn, and Justina. 

Best Regards,
Lynn Lee

-----Original Message-----
From: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Nick Cox
Sent: Wednesday, October 10, 2012 9:47 PM
To: statalist@hsphsun2.harvard.edu
Subject: Re: st: RE: growth rate

These methods ignore the fact that Lynn's gap varies between 5 years and 2
years. That's neither necessary nor accurate. See my post for a constructive
alternative.

Nick

On Wed, Oct 10, 2012 at 2:39 PM, Swanquist, Quinn Thomas <qswanqui@utk.edu>
wrote:
> If you must use xtset to do this, you can create a new variable to
identify the year as follows:
>
> sort id year
> by id: gen yearid = _n
> xtset id yearid
> gen growth=D.loggdp
>
> Alternatively you could use:
>
> sort id year
> by id: gen growth = loggdp - loggdp[_n-1]
>
> Of course your growth rate is based on unbalanced panel data so you'll
need to consider that when using this variable for its intended purpose.
>
> Quinn T. Swanquist
> qswanqui@utk.edu
>
> -----Original Message-----
> From: owner-statalist@hsphsun2.harvard.edu 
> [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Lynn Lee
> Sent: Wednesday, October 10, 2012 9:25 AM
> To: statalist@hsphsun2.harvard.edu
> Subject: st: growth rate
>
> Nick,
>
> My panel data has 4 years for each country,2007,2002,1997,1995. The 
> gap is not same. Therefore, I do not know how to assign value to 
> -delta()- in -xtset-. I figured out why  Stata11 generated all missing 
> values for growth rate. But the year gap is unbalanced. I tried -xtset 
> id year,delta(5)-,
> Stata11 told me "time values with period less than delta() found.
>
> Now, I replace "1995" with "1992" artificially, then I got the growth
rate.
>
> But is there any direct way (not need to replace the year artificially)
which can generates growth rate for unbalanced year gap panel data?
>
> I appreciate for your help.
>
> Best Regards,
> Lynn Lee
>
>
> -----Original Message-----
> From: owner-statalist@hsphsun2.harvard.edu
> [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Nick Cox
> Sent: Wednesday, October 10, 2012 8:49 PM
> To: statalist@hsphsun2.harvard.edu
> Subject: Re: st: growth rate
>
> -help xtset- explains about setting by panel and year. Once you have 
> done that correctly
>
> gen growth=D.loggdp
>
> is sufficient.
>
>
> On Wed, Oct 10, 2012 at 1:41 PM, Lynn Lee <lynn09v@gmail.com> wrote:
>
>> I use -bysort id: gen growth=D.loggdp- to generate growth rate of GDP 
>> in panel data. I also wrote -xtset year- before this command, but
>> Stata11 told me "time variable not set". I am assuming this command 
>> is only for time-series data. What about panel? What is the command 
>> used in panel to generate growth rate?

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

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


© Copyright 1996–2014 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   Site index