But just like Post Occupancy Evaluation information that architecture firms try obtain from clients, it takes a commitment from the client to collect the data to share with the designers. They often see it as important to their consultant but not to the hospital.
A recent NBC News post had some confusing reporting according to Sara Marberry, a Knowledge Expert in Healthcare Design, she discusses it at length here: http://www.saramarberry.com/believe-evidence-based-design/
And she explains more about evidence based design in this post on the 8 steps of EBD research: http://www.saramarberry.com/going-all-the-way-with-evidence-based-design/
Sara Marberry EDAC has a Blog covering EBD and healthcare design in general that is very informative, and well written, follow her blog: http://www.saramarberry.com/blog/