Fahn et al developed a rating scale for the severity of an essential tremor.
Parameter:
(1) amplitude
(2) frequency of occurrence
(3) features
|
Amplitude
|
Frequency
|
Features
|
Rating
|
|
none visible
|
NA
|
not visible
|
0
|
|
low
|
intermittent
|
barely perceivable
|
1+
|
|
moderate (1 to 2 cm)
|
usually present
|
clearly oscillatory
|
2+
|
|
large (> 2 cm)
|
usually present
|
violent, jerky, interferes with tasks
|
3+
|
In the implementation I expanded on the interference with tasks.
