Disabilities Affect 1/5 of All Americans
  - United States, Census Brief
    (1997)
    
      - 1 in 5 people have some kind of disability
- 1 in 10 have a severe disability
 
- World, World Health
    Organization (2000)
    
      - 7-10% of world lives with a disability
- Translates to 500 million people