Dr. Bristol has published more than 30 scholarly articles in peer-reviewed journals and has given more than 20 unpublished presentations, primarily on clinical trial methodology. Research interests include


• Adaptive designs
• Interim analysis
• Non-inferiority
• Subgroup analysis
• Statistical communication.

Statistical Consulting Services Inc. 


David R. Bristol, PhD founded Statistical Consulting Services Inc. (SCS) in 2004…

after more than 20 years in the pharmaceutical industry.  During this time and the subsequent years as a consultant, Dr. Bristol gained experience with the following therapeutic areas:


• Allergy
• Analgesia
• Cardiovascular
• CNS
• Dermatology

• Infectious Diseases
• Oncology
• Ophthalmology
• and MANY others.