The definition of the five included functional assessments from the ALS Functional Rating Scale-Revised (ALSFRS-R) [6] and their scores.

Each score ranges from 0 to 4, where 0 represents complete inability with regard to the function, and 4 represents normal function. For each patient, our method predicts the time until that patient will experience significant difficulty (ALSFRS-R ≤ 2) for that specific assessment.