Produces data bases, reports, and statistical analyses for the CCCT. He has participated in the HDFP, DISH, BHAT, TAIM, SHEP, CRYO-ROP, CARE, and ALLHAT studies. He designed and implemented an interactive computer randomization process for TAIM.

Mr. Schreyer provided programming and statistical support in previous research environments in which automobile accidents and marine life were studied, and he has built an epileptic patient data base.