For the survivors you have to put (Survival time = the time till end of the study), it cannot be missing or a fake value Bassam "Nader Deeb" <Nader.Deeb@sygeninternational.com> Sent by: jmp-l-owner@l
Why don't you merge the 2 tables (by MRN and date) using the Join function in JMP by Matching columns? Bernard Silke <silkeb@tcd.ie> Sent by: jmp-l-owner@lists.biostat.wustl.edu 03/25/2008 02:14 PM P