Table 4:

Correlation coefficients between CSA (GM and SC) and clinical scores at baseline and at 1 yeara

PredictorsAt BaselineAt 1 Year
ALSFRS-R SubscoreMMT Arm SubscoreALSFRS-R Subscore
GMCSAR = 0.56R = 0.40R = 0.48
P = .004bP = .049aP = .035c
SCCSAR = 0.55R = 0.40R = 0.54
P = .005bP = .054P = .017c

  • Note:—MMT indicates manual muscle testing.

  • ↵a CSA was averaged across the C4–C6 vertebral levels. Clinical scores included: 1) ALSFRS-R at baseline; 2) MMT subscores at baseline; and 3) ALSFRS-R subscore at 1 year.

  • ↵b Significant (P ≤ .01).

  • ↵c Significant (P ≤ .05).