Date:         Wed, 9 Jun 2004 13:26:54 -0700
Reply-To:     Sharon <findingjobs@HOTMAIL.COM>
Sender:       "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From:         Sharon <findingjobs@HOTMAIL.COM>
Organization: http://groups.google.com
Subject:      Tracking students - longitudinal study
Content-Type: text/plain; charset=ISO-8859-1

I'm collecting data on students from 3 different points in time.
Given I have a unique id for each student, and for each point in time
I have a different database, how do I go about in tracking the
student?  That is, what is the best way to know if student X
participated in time 1 and time 2?  Or if student X just participated
in time 1?

I am thinking that an IF THEN statement should work, but am unsure
exactly how to write it.

Thank you,
Sharon.