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Re: st: Create baseline variable within panel data
From
Nick Cox <[email protected]>
To
"[email protected]" <[email protected]>
Subject
Re: st: Create baseline variable within panel data
Date
Sat, 20 Jul 2013 23:08:20 +0100
bysort id (time) : gen newvar = outcome[1]
Nick
[email protected]
On 20 July 2013 21:44, Nikolaos Pandis <[email protected]> wrote:
> I have 5 observations per patient which indicate outcome measurements at 5 different time points including baseline.
> I have reshaped my data long and I would like to generate a new variable which is populated for each patient id (5 instances) with the baseline outcome value (yi1) as shown below:
>
> id outcome time new_var
>
> 1 y11 1 y11
> 1 y12 2 y11
> 1 y13 3 y11
> 1 y14 4 y11
> 1 y15 5 y11
> 2 y21 1 y21
> 2 y22 2 y21
> 2 y23 3 y21
> 2 y24 4 y21
> 2 y25 5 y21
> 3.........................
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