Table 2.
Neuropsychological performance of healthy controls (HCs) and participants with Parkinson's disease with (PDDS) and without (PD) depressive symptoms.
| Tests of executive resources | Groups | Significant difference with HC | ||
|---|---|---|---|---|
| HC Mean (SD) |
PD Mean (SD) |
PDDS Mean (SD) |
||
| Stroop color word test (number of words) | 48,77 (10,57) | 48,64 (6,64) | 44,18 (7,40) | aNS |
| Stroop color word test (number of errors) | 0,38 (0,77) | 1,36 (1,57) | 1,17 (1,53) | NS |
| Color trail-making test A | 34,08 (8,98) | 36,10 (13,76) | 44,85 (17,44) | NS |
| Hayling | 4,58 (1,88) | 3,73 (1,74) | 3,83 (1,64) | NS |
| London tower (number of errors) | 0,46 (0,52) | 0,58 (0,67) | 3,15 (3,39) | PDDS* |
| Brixton spatial anticipation test | 7,00 (2,27) | 4,75 (2,01) | 4,69 (2,10) | PDDS*, PD* |
All tests were performed without dopaminergic medication.
aNS (non-significant); **P < 0.01; *P < 0.05.
No results are significantly different between PDDS and PD except for the Tower of London (number of errors; P < 0.05).