… disease. I am using a variety of methods to investigate how function changes over time, the impact of function and frailty on hospital readmissions, and the role of … DS. Spinal Cord Injury-Functional Index (SCI-FI): Responsiveness to Change over Time. Archives of Physical Medicine and Rehabilitation Keeney T. , Fox AB., Jette … therapist who practices clinically in an acute-care setting, I had a difficult time finding a PhD program that would allow me to become trained in the type of …