Table 3.

Riluzole Subgroup Characteristics

	Riluzole-naive	Riluzole-treated
Numbers	14	15
Male:female	8:6	9:6
Age, yrs, mean ± SD (range)	60.4 ± 12.5 (32–78)	59.4 ± 7.4 (47–72)
Disease Duration, mo, mean ± SD (range)	25.4 ± 16.4 (4–64)	30.9 ± 12.6 (12–60)
ALSFRS-R, mean ± SD (range)	38.1 ± 6.1 (26–47)	30.4 ± 8.5 (18–25)*
UMN Score. mean ± SD (range)	14.7 ± 7.3 (1–24)	16.5 ± 7.2 (3–27)

Abbreviations: ALSFRS-R = revised Amyotrophic Lateral Sclerosis Functional Rating Scale, UMN = upper motor neuron.

^*p ≤0.05; no significant differences in other characteristics between subgroups.