PDMeasure is beginning to show some interesting results. The graph below shows the number of years since diagnosis and the amount of PD medication (measured as a levodopa equivalent daily dose, LEDD) taken by people in the survey with a diagnosis of IPD.
LEDDyDX.png
There is too little data to show statistical significance. But, I do think that as a proof of concept it does show what is possible if we had more data.
John