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st: creating a "years since event" variable in panel data


From   Christer Thrane <lineea@broadpark.no>
To   statalist@hsphsun2.harvard.edu
Subject   st: creating a "years since event" variable in panel data
Date   Thu, 08 Mar 2007 19:23:04 +0100

Hi,

I have a annual panel data set (1 obs per year), where ID identifies the person and the variable OBSYEAR the year of observation (1995=1, 1996=2, ..., 2002=7).

The variable TIME is the time dimension, ranging from 0 to 7.

The variable EVENT is a dymmy (1=event happened during the year in question; 0=event did not happen during the year in question).

Q: How do I create the variable NUMBER OF YEARS SINCE (A POSSIBLE) CHANGE FROM 0 to 1 on EVENT?

Best regards,

Christer Thrane
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