Concordance Correlation Coefficient

[tka726]

I am trying to test agreement between results of two different methods. I want to calculate the concordance correlation coefficient.  I know that SAS will not directly compute the concordance correlation coefficient. Is there a way to compute this from output from a certain procedure? 

The version of SAS that I have does not support IML so I am not able to use this code. https://newonlinecourses.science.psu.edu/stat509/sites/onlinecourses.science.psu.edu.stat509/files/l...

[ballardw]

Kendall's Tau-b, a non-parametric Correlation Coefficient, is available in Proc Corr

Proc Glimmix with the COVB option on the model statement will create a concordance coefficient as part of the covariance matrices diagnostics