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Dear Carrie--I'm not sure if this is the rating scale you are seeking, but perhaps it will be helpful to you and others: INDEPENDENT ASSESSMENT SCALE FOR PD--Schwab and England 100%= Completely independent, able to do all chores without slowness, difficulty and impairment. Essentially normal--not aware of difficulty 90%= Completely independent, able to do all chores with some degree of slowness, difficulty, and impairment. Might take twice as long, beginning to be aware of difficulty. 80%= Completely independent in most chores, takes twice as long.Conscious of difficulty and slowness. 70%= Not completely independent, more difficulty with some chores, 3 or 4 times as long in some,must spend large part of day with chores. 60%= Some dependency, can do most chores, but exceedingly slowly and with much effort. Errors; some chores impossible. 50%= More dependent, help with half: shower, etc.Difficulty with everything. 40%= Very dependent, can assist with all chores, but few alone. 30%= With effortnow and then does or begins a few chores alone. Much help needed. 20%= Nothing alone. Can give slight help with some chores.Severe invalid. 10%= Totally dependent, helpless. Complete invalid. 0%= Vegetative functions such as swallowing, bladder and bowel functions are not functioning. Bedridden. NOTE: Patients between severe mobility fluctuations may vary betewwn 10 and 90%. For example, a patient during a good or "on" period may be 75%, yet when an "off" period occurs they may revert to a 25% level of functioning.