Effect of Motorized Scooters on Physical Performance and Mobility: A Randomized Clinical Trial  Helen Hoenig, MD, MPH, Carl Pieper, DrPH, Laurence G. Branch, PhD, Harvey Jay Cohen, MD  Archives of Physical Medicine and Rehabilitation  Volume 88, Issue 3, Pages 279-286 (March 2007) DOI: 10.1016/j.apmr.2006.11.022 Copyright © 2007 American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation Terms and Conditions

Fig 1 Flow chart of progress of participants through stages in the trial. *Among 226 persons who called the central number, 66.8% were ineligible. Reasons for ineligibility included the following: did not meet ARA criteria for OA or RA, 63.2%; vehicle would not accommodate lift, 21.9%; cardiac disease, 4.5%; owned scooter already, 3.5%; could not walk, 3.5%; cognitive impairment, 1.7%; no driver’s license, 0.9%; and other, 2.6% (some persons were ineligible for >1 reason). †Medical problems (n=4), transportation problem (n=1), and purchased a scooter (n=1). ‡Unhappy about being randomized to the scooter group (after baseline data collection but before having the lift installed on the car) (n=1), medical problems (n=1), and reasons unspecified (n=2). Archives of Physical Medicine and Rehabilitation 2007 88, 279-286DOI: (10.1016/j.apmr.2006.11.022) Copyright © 2007 American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation Terms and Conditions