Re: st: Re: Questions on Stata

 From Nicola Orsini <[email protected]> To [email protected] Subject Re: st: Re: Questions on Stata Date Mon, 13 Dec 2004 13:36:02 +0100

```bysort var2: gen var4 = _N
bysort var2: gen var5 = _n

See - help _variables -

N.Orsini

----- Original Message -----
From: Dongshu Ou <[email protected]>
Date: Sunday, December 12, 2004 5:18 am
Subject: st: Re: Questions on Stata

> >
> > >
> > >   data set looks like
> > >
> > >   var1   var2   var3
> > >
> > >   80     30      1
> > >   75     30      1
> > >   85     30      1
> > >   76     33      1
> > >   78     33      1
> > >   75     33      1
> > >   80     29      2
> > >   82     29      2
> > >   83     29      2
> > >   ...................
> > >
> > >  Say, var1 is an indicator measured at 3 different times of each
> > > individual. var2 is age, var3 indicates "group"
> > >
> > >  I want to generate a variable to indicate every three of the var1
> > > belongs to the same person, and a variable indicating three
> > > different times for the same person , which would be looked like:
> > >
> > >   var1   var2   var3    Var4   Var5
> > >
> > >   80     30      1       1       1
> > >   75     30      1       1       2
> > >   85     30      1       1       3
> > >   76     33      1       2       1
> > >   78     33      1       2       2
> > >   75     33      1       2       3
> > >   80     29      2       3       1
> > >   82     29      2       3       2
> > >   83     29      2       3       3
> > >   ................... ..........
>
>
> What Stata Command I should use then?? Thank you very much!!
> *
> *   For searches and help try:
> *   http://www.stata.com/support/faqs/res/findit.html
> *   http://www.stata.com/support/statalist/faq
> *   http://www.ats.ucla.edu/stat/stata/
>

*
*   For searches and help try:
*   http://www.stata.com/support/faqs/res/findit.html
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/
```