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Table 1: Demographic data for the 25 patients with ALS and the 22 healthy controls
Characteristics Controls Patients with ALS
At Baseline 1-Year Follow-Up Subgroup
Number 22 25 19
Sex 11 F/11 M 6 F/19 M 3 F/16 M
Age at baseline, yr ± SD 50.9 ± 13.0 53.3 ± 10.1 52.8 ± 9.2
Note:—F indicates female; M, male.

Characteristics	Controls	Patients with ALS
Characteristics	Controls	At Baseline	1-Year Follow-Up Subgroup
Number	22	25	19
Sex	11 F/11 M	6 F/19 M	3 F/16 M
Age at baseline, yr ± SD	50.9 ± 13.0	53.3 ± 10.1	52.8 ± 9.2