The rater selects one percentage from 100% to 0% in 10% steps. Higher percentages indicate greater functional independence.

Percentage	Implemented functional description
100%	Completely independent, with essentially normal function.
90%	Completely independent, but chores are slower or somewhat difficult.
80%	Independent in most chores, often taking about twice as long.
70%	Not completely independent. Marked difficulty with some chores and much of the day spent on tasks.
60%	Some dependency. Most chores are possible but very slow and effortful.
50%	More dependent. Needs help with about half of chores and everything is difficult.
40%	Very dependent. Can assist with chores but completes only a few alone.
30%	Marked dependence. Can occasionally start or complete a few chores with effort and help.
20%	Severe dependence. Cannot complete activities alone but may provide slight help.
10%	Totally dependent and helpless.
0%	Bedridden, with failure of basic vegetative functions such as swallowing or continence.

Schwab and England Activities of Daily Living (ADL) Scale