Table 1.

Characteristics of the ALS patient cohort

Characteristics of patient cohort	ALS patients
Gender (male : female), n = 159	92: 67 (58 % : 42 %)
Onset (spinal : bulbar), n = 155	113: 42 (73 % : 27 %)
Age, n = 159
mean (SD)	60.7 years (SD 11.1)
Disease duration, n = 145
mean (SD)	40.2 months (SD 43.1)
median (min - max)	24 months (1 – 234)
ALSFRS-R, n = 155
mean (SD)	28.46 (SD 10.9)
ALSFRS-R bulbar, n = 155
mean (SD)	7.68 (SD 3.8)
median (min - max)	9 (0–12)

ALSFRS-R: Amyotrophic Lateral Sclerosis Functional Rating Scale – Revised

SD: standard deviation