The following programs are available for download from this site:

For Brian Smith's C++ matrix algebra library, 
   go to "Smithlib" subdirectory.  Read "INSTALL" file.

To fit model in Cowles, Zimmerman, Christ, and McGinniss (2001),
   go to "spatial" subdirectory.  Read "spatial.txt" file.

To fit models in 

   Cowles (2002) "Bayesian Estimation of the Proportion of Treatment Effect 
   Captured by a Surrogate Marker, "  Statistics in Medicine

   Cowles (2002) "Bayesian Estimation of the Proportion of Treatment Effect 
   Captured by Longitudinal Surrogate Markers"

   Cowles (2004) "Bayesian methods for evaluating surrogate markers,"
        Technical report, Department of Statistics and Actuarial Science,
        The University of Iowa


   go to "markers" subdirectory