Geoff Der

Geoff Der is a consulting statistician for the Medical Research Council in Glasgow, Scotland, where he advises research staff on study design and statistical analysis. A SAS® user since 1981, Geoff specializes in Base SAS®, SAS/STAT®, SAS/GRAPH®, the SAS Macro facility, ODS, and SAS® Enterprise Guide®.

Brian S. Everitt

Brian S. Everitt is retired as Head of the Department of Biostatistics and Computing, Institute of Psychiatry, King's College, London, and is now Professor Emeritus at King's College.