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st: RE: Re: Unique identifier


From   "Hulley, Benjamin (NIH/NCI)" <hulleyb@mail.nih.gov>
To   "'statalist@hsphsun2.harvard.edu'" <statalist@hsphsun2.harvard.edu>
Subject   st: RE: Re: Unique identifier
Date   Fri, 29 Oct 2004 09:46:53 -0400

Janet Willard <mailto:willard66@hotmail.com> wrote at  Friday, October 29,
2004 9:38 AM:

> I have a dataset that consists of a number of patients and the tooth
> treated, typically of the form Evans LL5. I wanted to combine these into a
> single numerical variable to identify each specific patient / tooth
> combination. The syntax I have used is:
> catenate code = patient tooth,punct(no)
> encode code,gen(code1)
> This returns a long variable which has the "numerical value" EvansLL5.
What
> I really wanted was a numerical variable such as 1. Can I achive this?
Many

try:

. egen code = group(patient tooth)

for more options to group:

. whelp egen

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