| Table 1: Participant characteristics. |
| | PD ()
Mean (SD) | HC ()
Mean (SD) | t valuea | value |
| | Age | 65.7 (8.8) | 66.7 (9.5) | 0.39 | ns | | Education (yrs) | 16.5 (2.3) | 16.5 (2.4) | 0.03 | ns | | Male : female | 12 : 12 | 7 : 16 | 1.9b | ns | | BDI | 7.0 (5.2) | 3.8 (4.2)c | 2.3 | 0.03 | | BAI | 8.0 (5.3) | 2.4 (3.4)c | 4.1 | 0.001 | | UPDRS—motor score | 24.6 (9.8) | NA | | | | Disease duration (yrs) | 7.0 (5.2) | NA | | |
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-values unless otherwise indicated; -squared value, = 21; MMSE: modified Mini-Mental State Examination, scores converted to standard MMSE range; BDI: Beck Depression Inventory-II; BAI: Beck Anxiety Inventory; UPDRS: Unified Parkinson's Disease Rating Scale; NA: not applicable; ns: not significant.
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