Region-of-interest measurements*
| Controls | a-ET | h-ET | Raw Values | ANCOVA Age-Sex-TIV | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | Mean | SD | t | P | t | P | |
| TIV | 1428.5 | 130.4 | 1438.9 | 134 | 1438.8 | 105.8 | .05 | .95 | – | – |
| CV | 895.9 | 86.4 | 892.1 | 111.7 | 867.6 | 72.6 | .57 | .56 | 1.9 | .17 |
| CrV | 110.5 | 15.5 | 102.76 | 21.1 | 98.2 | 13.6 | 3.02 | .056 | 4.75 | .012 |
| Midsagittal vermal area | 898.6 | 170.6 | 849.8 | 124.6 | 790.3 | 94.5 | 3.32 | .042 | 3.28 | .044 |
| Anterior lobule area | 394.5 | 74.6 | 373.7 | 53.9 | 343.8 | 37.9 | 3.91 | .025 | 3.46 | .038 |
| Posterior sup. lobule area | 209.7 | 47.3 | 201.1 | 37.4 | 195.8 | 37.1 | .62 | .54 | .66 | .51 |
| Posterior inf. lobule area | 294.3 | 69.5 | 274.9 | 56.6 | 250.6 | 43.1 | 2.9 | .057 | 3.21 | .047 |
Note:—sup. indicates superior; inf., inferior; a-ET, arm tremor; h-ET, arm and head tremor; TIV, total intracranial volume; CV, cerebellar volume; CrV, cerebral volume; -, perform ANCOVA analysis by using 3 nuisance variables (age + sex + TIV).
* Volumes are in cubic millimeters; areas are in square millimeters.