Within-group comparisons of hemispheric caudate nucleus volume*
| Groups | Caudate Volume | t-Value | df | Sig | Eta-Squared | |||
|---|---|---|---|---|---|---|---|---|
| R (SD) | R (SEM) | L (SD) | L (SEM) | |||||
| C (n = 27) | 3.976 (0.435) | 0.083 | 3.772 (0.426) | 0.082 | 4.527 | 26 | .000† | .441 |
| AD (n = 19) | 3.674 (0.595) | 0.137 | 3.551 (0.487) | 0.112 | 1.219 | 18 | .239 | |
| FTD (n = 12) | 3.055 (0.811) | 0.234 | 2.819 (0.524) | 0.151 | 1.200 | 11 | .255 | |
| SD (n = 13) | 3.698 (0.565) | 0.157 | 3.503 (0.598) | 0.166 | 1.572 | 12 | .142 | |
| PNFA (n = 9) | 3.323 (0.601) | 0.200 | 2.695 (0.539) | 0.179 | 4.282 | 8 | .003† | .668 |
Note:—C indicates control; R, right; L, left; SD (header), standard deviation; df, degrees of freedom; Sig, significance (2-tailed); SD (column 1), semantic dementia; SEM, standard error of the mean; AD, Alzheimer disease; FTD, frontotemporal dementia; PNFA, progressive nonfluent aphasia; Eta-Squared, the sum of squares between groups divided by total sum of squares.
* All volumes are in cubic centimeters.
† Significant at P < .05.