Re: st: Re: Unique identifier

[Tom Trikalinos <ttrikalin@mac.com>]

try
. egen patientToothID = group(patient tooth)
and you'll get a variable "patientToothID" with values 1, 2, ..., n, 
where n is the number of patient/tooth patterns that you have in the 
data set.

tom

On Oct 29, 2004, at 4:38 PM, Janet Willard wrote:


> 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 thanks,
> Janet
>
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