Schwab and England developed a scale describing the capacity for daily living shown by a patient with Parkinson's Disease. It is similar to the Karnofsky scale and can be used for other conditions.
Dependence
Abilities
Awareness
Percent
none; completely independent
can do all chores without slowness, difficulty or impairment; normal
unaware of any difficulties
100%
none
can do all chores but with some degree of slowness, difficulty or impairment
beginning to be aware of difficulty
90%
none
takes twice as long to do chores
conscious of difficulty and slowness
80%
none
more difficulty with some chores; takes 3-4 times as long
70%
some dependency
can do most chores but very slowly and with much effort; makes errors
some impossible
60%
more dependent
slow and needs help
has difficulty with everything
50%
very dependent
can assist with all chores but can only do a few alone
40%
part invalid
much help needed; may be able to do a few alone with much effort
30%
severe invalid
can do nothing alone; may be able to help a little in some tasks
20%
totally dependent; complete invalid
helpless
10%
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