1. BH Connolly, PT, EdD, is Professor and Chair, Department of Physical Therapy, College of Allied Health Sciences, University of Tennessee Health Science Center, 822 Beale St, Memphis, TN 38363 (USA).
2. NS Lupinnaci, PT, MS, is currently in private practice. She was a faculty member at the University of Tennessee Health Science Center when this research was completed
3. AJ Bush, PhD, is Professor, Division of Biostatistics and Epidemiology, College of Medicine, University of Tennessee Health Science Center. Dr Bush also holds a joint appointment as Associate Professor in the Department of Physical Therapy