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Re: st: growth rates
From
Nick Cox <[email protected]>
To
"[email protected]" <[email protected]>
Subject
Re: st: growth rates
Date
Fri, 7 Mar 2014 13:24:00 +0000
I don't get this. Do you have a definition of growth rate and want
Stata code for this or do you want advice on how to measure it?
For example, if something can ever be zero or negative, then even
change in value / previous value
can not be a good idea, because growing from -1 to 0 gives growth rate
of -1 and growing from 0 to 1 gives an indeterminate value.
so even that is not a universal.
Nick
[email protected]
On 7 March 2014 13:12, Bornmann, Lutz <[email protected]> wrote:
> Hi,
>
> I do have annual publication numbers for several countries:
>
> ITEM_PY us' ch'
> 1990 3759 119
> 1991 3738 149
> 1992 3757 149
> 1993 3810 169
> 1994 3920 199
> 1995 4134 171
> 1996 4404 211
> 1997 4436 236
> 1998 4513 246
> 1999 4542 238
> 2000 4456 275
> 2001 4519 263
> 2002 4602 259
> 2003 4705 276
> 2004 4836 310
> 2005 4834 337
> 2006 5150 344
> 2007 5253 433
> 2008 5568 466
> 2009 5520 475
> 2010 5690 534
>
> I would like to calculate growth rates. What is the best (and simplest) statistical procedure to do that?
>
> Thank you,
>
> Lutz
>
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