Date:         Thu, 19 Sep 1996 16:14:15 -0400
Reply-To:     "Maria M. Corrada" <mcorrada@WELCHLINK.WELCH.JHU.EDU>
Sender:       "SAS(r) Discussion" <SAS-L@UGA.CC.UGA.EDU>
From:         "Maria M. Corrada" <mcorrada@WELCHLINK.WELCH.JHU.EDU>
Subject:      program for matching

I was wondering if anyone knows or has a SAS program that could
be used to do incidence density matching for cases and controls, which
involves considering each case in turn and selecting one or more controls
from the set of people who were at risk at the time the individual was
identified as a case. I also want to be able to match on one or more
variables, and not necessarily exact matching but rather within 1 or 2,
for example, years of age. I have a program that does just that written
by Neil Pearce (Int J of Epi Vol 18 981-984) but does the matching by age
categories rather than plus/minus. I haven't been able to modify it
succesfully to make it do what I want.
 
Thanks for the help,
 
Maria Corrada
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