AHRQ just published a new white paper last week.
You can read it here as a PDF.

From World Usability Day 2006 poster
The objectives of the project that led to this paper were:

...to understand processes and practices by these vendors with regard to:
  • The existence and use of standards and “best practices” in designing, developing, and deploying products.
  • Testing and evaluating usability throughout the product life cycle.
  • Supporting post-deployment monitoring to ensure patient safety and effective use.
It's good to see continued attention to usability in the EHR/EMR world.
Posted
AuthorJeff Belden MD