SUGGESTION add provision for multilevel clustering and/or multilevel frailty in PHREG
on 10-17-201409:48 AM - last edited on 10-10-201511:26 PM by LainieH
Currently PROC PHREG cannot handle hierarchical or multi-level clustered data via the COVS(AGGREGATE) & ID statement construct. Neither does the RANDOM statement (which fits FRAILTY models) allow for more than one variable or level of clustering.
We have had a number of requests regarding multilevel clustering and/or multilevel frailty effects in PHREG. Hence, we are establishing this SASWare Ballot item for voting by users.