Table 1. Demographic Information for ALS and Healthy Control Groups.

Demographic Variables	ALS patients (n = 19) Mean (SD)	Healthy controls (n = 18) Mean (SD)
Age	57.21 (8.74)	59.86 (8.63)
Sex	13M, 6F	11M, 7F
Education years	13.58 (2.09)	16.28 (2.35)
MSO	47.00 (33.68)	NA
ALSFRS-R bulbar	10.89 (1.37)	NA
ALSFRS-R limb	14.84 (5.35)	NA
ALSFRS-R resp.	11.05 (1.54)	NA
ALSFRS-R total	36.84 (6.53)	NA

Education Years = years-of-education based on degrees obtained; MSO = months-since-symptom onset; ALSFRS-R bulbar = sub-score from ALS Functional Rating Scale-Revised questionnaire evaluating bulbar function (questions 1–3); ALSFRS-R limb = sub-score from ALS Functional Rating Scale-Revised questionnaire evaluating limb function (questions 4–9); ALSFRS-R resp. = sub score from ALS Functional Rating Scale-Revised questionnaire evaluating respiratory function (questions 10–12); ALSFRS-R total = total score of ALS Functional Rating Scale-Revised questionnaire.