Notes
Presented at the American Academy of Physical Medicine and Rehabilitation 52nd Annual Assembly/American Congress of Rehabilitation Medicine 67th Annual Session, Phoenix, Arizona, October 22, 1990.
This research was supported in part by the Geriatric Research Committee of Northwestern University Medical School, Chicago, Illinois, and the Women's Board of the Rehabilitation Institute of Chicago, Chicago, Illinois. Jeffrey S. Roth, ASA, provided statistical consultation.