Table 3:

Cerebellum and brain stem volumes of patients and control subjects

SCA3SCA6Control Subjects
Cerebellum volume (ml)
Mean ± SD119.0 ± 17.298.1 ± 14.4132.6 ± 11.3
P004ab006 (SCA3)bc, <.001 (SCA6)b
Brain stem volume (ml)
Mean ± SD21.5 ± 3.827.3 ± 2.528.8 ± 2.0
P<.001ab<.001 (SCA3),bc .027 (SCA6)d

  • a Group differences between SCA3 and SCA6 assessed by variance analysis with disease duration as a covariate (GLM model).

  • b Highly significant with P < .01.

  • c Group differences between control groups and patient groups assessed by Student ttests.

  • d Significant with P < .05.