Partial correlations between caudate volume and MMSE scores by subject group*
| Volume | Control (n = 27) | AD (n = 19) | FTD (n = 12) | SD (n = 12) | PNFA (n = 6) | ALL (n = 76) |
|---|---|---|---|---|---|---|
| R Caudate | ||||||
| r | 0.018 | 0.193 | −0.574 | −0.067 | −0.904 | 0.163 |
| Sig | 0.930 | 0.457 | 0.083 | 0.855 | 0.096 | 0.165 |
| L Caudate | ||||||
| r | 0.251 | 0.136 | 0.062 | 0.412 | 0.319 | 0.393 |
| Sig | 0.227 | 0.602 | 0.865 | 0.236 | 0.861 | 0.001† |
Note:—ALL indicates across all groups: control, AD, FTD, SD, PNFA; R, right; L, left; r, partial correlation value; Sig, 2-tailed significance for partial correlation value; AD, Alzheimer disease; FTD, frontotemporal dementia; SD, semantic dementia; PNFA, progressive nonfluent aphasia.
* Partial correlation controlled for age and ICV.
† Partial correlations significant at P < .05.