1. AK Doty, PT, PCS, is employed by Lawton (Okla) Public Schools. This work was completed in partial fulfillment of the requirements for her Master of Science degree from the University of Oklahoma Health Sciences Center.
2. IR McEwen, PhD, PT, PCS, is Presbyterian Health Foundation Presidential Professor, Department of Physical Therapy, University of Oklahoma Health Sciences Center, Oklahoma City, Okla
3. D Parker, PhD, is Professor, Department of Biostatistics and Epidemiology, University of Oklahoma Health Sciences Center
4. J Laskin, PT, is Assistant Professor, Department of Physical Therapy, University of Montana, Missoula, Mont. At the time the study was completed, he was Adjunct Assistant Professor, Department of Physical Therapy, University of Oklahoma Health Sciences Center