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TABLE 4: Relationship between age and motor dark line
Motor Dark Line ALS Control Mean Age (y) SD
Absent 19(76) 17(81) 47.39 12.28
Present 6(24) 4(19) 56.90 13.44
Note.—Observers 1 and 2 had identical interpretations. Numbers in parentheses are percentages. P = .039.