Table 4.
Convergent validity and correlates of the PDSS‐2
| Spearman's Rho | |
|---|---|
| SCOPA‐Sleep Nocturnal sleep | 0.62 |
| SCOPA‐Sleep Daytime sleepiness | 0.44 |
| H & Y staging | 0.30 |
| SCOPA‐Motor Examination | 0.24 |
| SCOPA‐Motor Activities of daily living | 0.37 |
| SCOPA‐Motor Complications | 0.34 |
| SCOPA‐Motor Total score | 0.34 |
| Non‐Motor Symptoms scale–Sleep/Fatigue | 0.56 |
| Non‐Motor Symptoms scale Total scorea | 0.52 |
| Clinical Impression of Severity Index | 0.39 |
| Visual Analog Scales for pain | 0.46 |
| Hospital Anxiety and Depression Scale‐Anxiety | 0.54 |
| Hospital Anxiety and Depression Scale‐Depression | 0.41 |
| Ageb | 0.01 |
| PD durationc | 0.16 |
| Duration of treatment for PD | 0.18 |
| LEDD | 0.22 |
a
Without the domain Sleep/Fatigue.
All coefficients, P < 0.001, except (b), not significant, and (c), P < 0.01.