The Bristol Observatory

              Incorporated in 1997 by John A. Pandiani, Ph.D., Sociologist 

                                             and Steven M. Banks, Ph.D., Mathematician

Probabilistic Population Estimation

PPE is a statistical data mining tool that uses anonymous data sets to produce quantitative measures of access to care, practice patterns, and treatment outcomes in complex systems of care.  PPE provides valid and reliable measures of the unduplicated number of individuals represented in data sets and the unduplicated number of individuals shared across data sets.  The data sets used in these analyses are HIPAA compliant.

PPE Video  

Technical Papers

 Web-based PPE 

Applications of PPE in Vermont Human Services

     Personal Privacy          HIPAA          

United States Patent (#6,470,298)