|Image By wheatfieldbrown|
The US Census has data on disability rates broken down by a few categories like sex, age and race.
I pulled data out of the XLS sheet for "Table D-1 Prevalence of Disability by Sex and Age - All Races" and made the graph below:
After I made my graph I poked around and noticed the Census already had a similar Figure. Ok so I reinvented that wheel, live and learn.
I also have the same data copied out of the Census XLS in table form :
|15 and older||21.3%||14%||4.7%|
|15 to 24||10.4%||5%||1.3%|
|25 to 44||11.4%||7%||1.9%|
|44 to 54||19.4%||13%||3.4%|
|55 to 64||30.1%||21%||5.7%|
|65 and older||51.8%||37%||15.6%|
|65 to 69||37.4%||26%||7.6%|
|70 to 74||43.8%||28%||9.4%|
|75 to 79||55.9%||38%||16.1%|
|80 and older||71.0%||56%||29.3%|
The definitions for the different categories are documented in the Census document.Definition of Disability, Functional Limitations, Activities of Daily Living (ADLs), and Instrumental Activities of Daily Living (IADLs)
They have a table that breaks it down by category. For example if you have difficulty getting out of bed without help then thats a disability whereas if you are unable to get out of bed without help thats a severe disability. Full explanation is in the document.
I think the key point of the above data is that disability rates increase with age. Most people live most of their lives without a disability but as we age disabilities become more and more common. 51.8% of people over 65 years old have a disability and 37% of them have a severe disability. If you want to work forever then fine, but don't think that should excuse you for saving for your retirement years. The likelihood of a disability grows with age and may derail your plans to work.