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Pearson's correlation coefficient for each comparison.
| HADS-A | HADS-D | Total HADS | PDQ | SF-36 | Barthel Index | |
|---|---|---|---|---|---|---|
| GDS | 0.799∗ | 0.800∗ | 0.880∗ | 0.712∗ | −0.320∗∗ | −0.217 |
∗ p < 0.01; ∗∗p ≤ 0.5. HADS-A: Hospital Anxiety and Depression Scale of Anxiety; HADS-D: Hospital Anxiety and Depression Scale of Depression; GDS: Geriatric Depression Scale; PDQ-39: Parkinson's Disease Questionnaire; SF-36: Short Form 36-Health Survey Questionnaire.
