Table 2.
Pearson correlations between principal component image (PCI) expression and primary clinical variables
| ad | dlb | |||
|---|---|---|---|---|
| pci1 | pci2 | pci1 | pci2 | |
| CAMCOG | 0.11 | 0.08 | 0.08 | −0.50* |
| CAF | 0.01 | −0.11 | –0.34 | 0.59** |
| CRT | −0.29 | 0.11 | −0.28 | 0.60** |
| (CRT(SD)) | −0.30 | 0.16 | −0.24 | 0.62** |
| UPDRS | −0.18 | 0.22 | −0.13 | −0.37 |
AD = Alzheimer's disease; DLB = dementia with Lewy bodies; CAMCOG = Cambridge Cognitive Examination; CAF = Clinical assessment of fluctuations; CRT = choice reaction time; CRT(SD) = choice reaction time variability (standard deviation); UPDRS III = Unified Parkinson's Disease Rating Scale (motor subsection).
*p < 0.05; **p < 0.01.