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st: RE: Counting Ulcers


From   "Earnhart, Benjamin J" <benjamin-earnhart@uiowa.edu>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: Counting Ulcers
Date   Thu, 7 Sep 2006 16:26:54 -0500

sort id
egen numuc=sum(vi), by(id)
tab numuc



*==========================================;
*Ben Earnhart
*Computer Consultant and 
*ICPSR Representative
*Department of Sociology and 
*College of Liberal Arts
*University of Iowa
*(319) 335-2887
*benjamin-earnhart@uiowa.edu
*==========================================; 

> -----Original Message-----
> From: owner-statalist@hsphsun2.harvard.edu 
> [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of 
> Raphael Fraser
> Sent: Thursday, September 07, 2006 4:14 PM
> To: statalist@hsphsun2.harvard.edu
> Subject: st: Counting Ulcers
> 
> Below is a snippet of my data. Each subject has 2 observation where vi
> indicates whether an ulcer is present or not. I would like to count
> the number of patients with ulcers on one leg only and those with
> ulcers on both legs.
> left=1, right=0
> 
> id     leg   vi
>       40   right    .
>       40    left    .
>       46   right    1
>       46    left    1
>       47    left    0
>       47   right    1
>       48   right    .
>       48    left    .
>       55    left    1
>       55   right    1
>       57   right    0
>       57    left    1
> 
> Raphael
> *
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> 

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