Like rd42 I've been unable to find detailed instructions. Without those, there is a danger that different people mark differently (my "mild" might be your "moderate").

Moreover, the 5 point scale (0, 1, 2, 3, 4) is restrictive. Can you have a 2.4 for tremor, say?

Does this matter? It depends on the context. As a measure of long term progression, especially where the marking is done by the same person throughout, it's probably reasonable. But, it doesn't help much for the sort of questions that I think many of us have: what exercise/diet minimises my tremor?

Tremor is difficult to measure because it affects different parts of the body differently at different times. That said, I still think we should try to objectively quantify it: e.g. the movement of my left index finger is 1 cm/sec, with a frequency of 6 hz.

Devices exist to do that, some with data logging over an extended period.

As a first step, I'm writing a program which uses a lap top's touchpad to measure finger motion over a 30 second period, say. It will only give a snapshot view.

John