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Re: st: Keeping an entire cell based on an observation taking a particular value


From   Dooruj Rambaccussing <[email protected]>
To   [email protected]
Subject   Re: st: Keeping an entire cell based on an observation taking a particular value
Date   Mon, 19 Mar 2012 20:57:42 +0000

Thank you very much Nick. It is very helpful.

On Mon, Mar 19, 2012 at 8:50 PM, Nick Cox <[email protected]> wrote:
> I understand this as follows. You have panel data defined by variables
> -id- and -time- and a bundle of other variables -X*-.
>
> You want to keep any panels such that any value of -Xk- within a panel is 1.
>
> egen OK = total(Xk == 1), by(id)
> edit if OK
>
> If and only if that is what you want
>
> keep if OK
>
> Nick
>
> On Mon, Mar 19, 2012 at 8:33 PM, Dooruj Rambaccussing
> <[email protected]> wrote:
>
>> I am a beginner to stata. I was wondering if someone can help me with
>> the following issue:
>>
>> I got a dataset with an id and time, and certain observations say X1,
>> X2 ...... Xk. My variable  Xk has got missing values. I would like to
>> keep an id when a certain condition holds, suppose Xk(t) ==1, and I
>> would also like to keep the missing obs. Can anyone help me with this
>> ?
>
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