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Re: st: RE: growth rate


From   Nick Cox <njcoxstata@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: RE: growth rate
Date   Wed, 10 Oct 2012 14:51:29 +0100

My economics is a bit rusty (last class was in 1969), but I guess
there is a division sign in there somewhere.

On Wed, Oct 10, 2012 at 2:45 PM, Justina Fischer <JAVFischer@gmx.de> wrote:
> 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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>>
>>
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> --
>
>
>
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