Rajiv Sinha
> I have a very large panel data set that looks as follows:
> people tracked over time and data on occurance of an event
> and a lot of time varying covariates (not shown below).
> Person Time Event Time X
> 1 1 2 1
> 1 2 2 3
> 1 3 2 20
> 2 1 1 5
> 2 2 1 6
> 2 3 1 9
> etc...
> I need to suppress these data as follows: since the event occured
for
> person 1 at time 2 I want to drop all data pertaining to him for
period 3
> and keep data only for period 1 and 2. Similarly for person 2,
since
> the event occured at time 1, I want to drop all data after this
point
> and keep data only for period 1. The final data should be:
> Person Time Event Time X
> 1 1 2 1
> 1 2 2 3
> 2 1 1 5
> How do I do this in Stata? Thanks in advance.
. keep if time <= eventtime
Nick
[email protected]
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