I would do: -
Suppose your variable is called var
gen j=var
replace j="diathermy[1]" if j[_n+1]=="diathermy[2]" & j=="diathermy[2]"
Then j would have what you want.
I think this should do it.
Thank you,
Ashim.
ue, Jan 6, 2009 at 1:22 PM, b. water <[email protected]> wrote:
> dear all,
>
> stata 8.2 xp pro,
>
> i have a var like this:
>
> monopolar
> bipolar
> bipolar
> bipolar
> monopolar
> nodiathrm
> diathermy[2]
> diathermy[2]
> bipolar
> monopolar
> diathermy[2]
> diathermy[2]
> .
> . <- denotes missing
> .
> monopolar
> diathermy[2]
> diathermy[2]
> .
> .
>
> what i want to achieve is for every first encountered diathermy[2] to be changed to diathermy[1], while leaving the second occurence as diathermy[2]. is this possible in stata? if it can be done, would appreciate advice/help on how to achieve it.
>
> thank you,
> bw
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