Table 2.

Phone-survey and wearable device compliance (Aggregate -- median [min, max]).

	ActiGraph	Modus	Combined
ALSFRS-RSE submissions	5 [2, 10]	6 [2, 13]	5 [2, 13]
ROADS submissions	4 [2, 10]	5 [2, 13]	5 [2, 13]
Days in observation period	178 [23, 191]	180 [61, 189]	179 [23, 191]
Valid days in observation period*	158 [21, 191]	136 [16, 183]	146 [16, 191]
Average number of valid hours on a valid day*	21 [15, 24]	12 [10, 17]	16 [10, 24]

ALSFRS-RSE smartphone self-entry Amyotrophic Lateral Sclerosis Functional Rating Scale-Revised, ROADS Rasch-built Overall ALS Disability Scale; valid hours/day -- hours/day passing the conditions outlined in Methods; * -- different methods used to define valid hour/day between the ActiGraph and Modus groups (see Methods section).