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Re: st: RE: growth rate


From   "Justina Fischer" <JAVFischer@gmx.de>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: RE: growth rate
Date   Wed, 10 Oct 2012 15:45:41 +0200

HI,

this is an approximation (Taylor), but not the exact growth rate.

The growth rate is defined as : (GDP-L1.GDP)(GDP)

Best

Justina
-------- Original-Nachricht --------
> Datum: Wed, 10 Oct 2012 13:39:56 +0000
> Von: "Swanquist, Quinn Thomas" <qswanqui@utk.edu>
> An: "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
> Betreff: st: RE: growth rate

> 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?
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