Maintain users throughout changes in situation and abilities
- Accidents
- in 1994 in
WA, 3,117 hospitalizations for head and spinal cord injuries.
- 15% of head and 47% of spinal injuries take longer than 8 days to
heal (if at all)
- Aging
- population of WA 5,894,121 (2000)
- 65 + 11.2%
- Situation
- Environment
