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Stephen Sprigle
02-05-1998, 11:52 PM
below is a short excerpt about spinal injury in the US- your post
asked for persons with quadriplegia so you'll have to dig through
the references- of course, wheelchair cushions are used by most
wheelchair users, many of whom do not have quadriplegia

stephen sprigle
helen hayes hospital


Based on figures from the Assistive Device Supplement to the 1990 National
Health Interview Survey, Jones and Sanford estimated that 12.9 million
non-institutionalized people with disabilities are classified as having
mobility impairments. An estimated 8.8% of them, or 1.46 million
Americans, use wheelchairs as their primary means of mobility. In
addition, Harvey, et. al and Gibson estimated the 1992 spinal cord injury
prevalence (both non- and institutionalized persons) in the US ranged from
177,000 to 230,000, respectively. Utilizing the database of the Spinal Cord
Injury Model Systems (14,791 people), Ditunno, et. al reported that a total
of 76.6% had either complete (Frankel grade A, 50.5%) or incomplete
(without functional motor - Frankel grades B, 13.2% and C, 12.9%) injuries
upon admission. Considering those who recovered motoric function during
their rehabilitation, that percentage drops to approximately 65% and
represents the percentage of people in the database who rely on a
wheelchair for mobility. Applying that figure to national prevalence
values, a rough estimate of 115,050 to 149,500 people with spinal cord
injury utilize a wheelchair as their primary means of mobility

National Center for Health Statistics, "1990 National Health Interview
Survey,"[CD-ROM series 10, No. 4], Hyattsville, MD: Public Health Service,
1993.
Jones ML and Sanford JA, "People with mobility impairments in the United
States today and in 2010," Assistive Technology, vol. 8.1, 43-53, 1996.
Harvey C, Rothschild BB, Asmann AJ, Stripling T, "New estimates of
traumatic SCI prevalence: A survey-based approach," Paraplegia, 28,
537-544, 1990.
Gibson CJ, "Overview of spinal cord injury," Phys Med Rehabil Clin North
Am, 3, 699-709, 1992.
Ditunno Jr. JF, Cohen ME, Formal C, Whiteneck GG, "Functional Outcomes," in
Spinal cord Injury: Clinical Outcomes from the Model Systems, Stover SL,
Delisa JA, Whiteneck GG, eds, Aspen Publications, Gaithersburg, MD,
170-184, 1995.