Table 1.

Summary of data extracted from the PRO-ACT database and used in this study.

Data Table	Description
ALSFRS	ALS functional rating scale values
Demographics	Demographic data, such as gender, age ${}^{\mathrm{a}}$, ethnicity, etc.
FAMHX	Family history concerning neurological diseases
FVC	Forced vital capacity (FVC) test values
Riluzole	If patient is taking Riluzole (the leading drug for ALS) or not
Patient ALSHX	Patient’s disease history: time of onset ${}^{\mathrm{b}}$, symptoms at onset, etc.
Vitals	Vital signs throughout the trials
Labs	Multiple laboratory test results throughout the trials

${}^{\mathrm{a}}$ Age denotes the age of a patient at the time the clinical trial began; ${}^{\mathrm{b}}$ Time of onset, referred to as onset time in this study, is documented relative to the time of clinical trial initiation.