I'm working with biological data and have a large number of concentrations for the same biochemical from two tissue types. I want to examine the correlation between the two tissue types for the same biochemical, i.e, chemical 1 from liver with chemical 1 from blood; chemical 2 from liver with chemical 2 from blood, etc. I don't want any of the other correlations. Is there a simple way to do this? The number of biochemical can range from 60 to over 300. I don't want to have to run Proc Corr 250 times if I can avoid it. The number of patients ranges from 10 to 30. I don't have a lot of experience with DO loops or macros in SAS, but I have a little. Thanks!
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