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Re: st: Recoding with values of the next spell


From   Federico Belotti <f.belotti@gmail.com>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   Re: st: Recoding with values of the next spell
Date   Sun, 26 May 2013 22:17:43 +0200

gen Yimp = Y
sort ID Start
by ID: replace Yimp = Yimp[_n+1] if Yimp==. & Yimp[_n+1]!=.

Federico 

Il giorno 26/mag/2013, alle ore 21:37, Kai Huang <demonsecret@hotmail.com.hk> ha scritto:

> Dear all, 
> 
> I have a spell dataset with some missing values of variables as follows:
> 
> ID   Start   End     Y      
> 766  1987   1988     1     
> 766  1988   1990     .     
> 766  1990   1994     0     
> 768  1988   1991     1     
> 768  1991   1993     0     
> 769  1987   1994     .     
> 769  1994   1995     1     
> 
> If the missing values can be recoded with values of those of the next chronological spell, are there any commands in STATA which can support doing such task? Thank you very much in advance.
> Best regards, 
> Kai Huang                         
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