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Re: st: RE: How to construct a duration variable?


From   "Albert Newton" <lacneo@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: RE: How to construct a duration variable?
Date   Thu, 6 Apr 2006 12:07:25 -0700

Thanks a lot!

Albert

On 4/6/06, Scott Merryman <smerryman@kc.rr.com> wrote:
> Here is one way.  It makes use of Nick Cox and Richard Goldstein's -spell-.
>
> clear
> input hhid    period  str1 brand    switch  Duration
> 1         1         A           0           1
> 1         2         B           1           4
> 1         3         B           0           4
> 1         4         B           0           4
> 1         5         B           0           4
> 1         6         C           1           2
> 1         7         C           0           2
> 1         8         A           1           1
> 1         9         B           1           4
> 1        10         B           0           4
> 1        11         B           0           4
> 1        12         B           0           4
> 1        13         C           1           2
> 1        14         C           0           2
> end
>
> tsset hhid per
> spell b
> bysort hhid _spell: replace _seq = _seq[_N]
> rename _seq duration
> drop _*
> l
>
>
> Scott
>
>
>
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