[DDI-users] varGrp/var relationships

[Steve McRoberts]

Can anyone provide an example of varGrp/var relationships usage? I  
have 25 groups of 10-50 var elements per group. It seems natural to  
me to specify the groups in varGrp then reference the varGrp id in  
the var. Apparently this was original intent but later changed when  
reading from the following documentation excerpts.

"<!--vargrp attribute on var element removed as redundant;
use var attribute on vargrp element to
encode vargrp to var relationships -->"

"<varGrp><notes>This variable group was created for the purpose of
  combining all derived variables.</notes></varGrp>"

But how does one reference all the var id's in the varGrp? There's  
only a single attribute of var.

Steve McRoberts
Institute on Aging
University of Wisconsin - Madison
608-265-6757