Ya Huang <ya.huang@AMYLIN.COM> wrote: > I'm posting this for a coworker. The question is > how can one calculate a "Intraclass Correlation" using SAS?

Dale has written about this any number of times. Just look up his posts in the SAS-L archives, looking for 'intraclass correlation' when the poster has 'stringplayer' in his name. And Dale typically does it with a single PROC MIXED, which I find preferable to the intraclass correlation macro that SAS has on its own website (which uses PROC GLM and an armada of macro statements).

HTH, David -- David Cassell, CSC Cassell.David@epa.gov Senior computing specialist mathematical statistician