All aspects of the project are aimed at understanding the abstraction methods and processes with the goal of learning and documenting best practices. Various methods are used to study the changes in the abstraction process and the impact of those changes on data quality and usabilty, as well as efficiency. Specific activities include: Description of forms development and implementation Description of training objectives and training processes Description of credentialing process for abstractors Analysis of the frequency of specific errors in the abstraction data content.