Table 5.
Differences and agreement between patients and caregivers on the PDSS‐2
| Difference in Points* | |||||||
|---|---|---|---|---|---|---|---|
| (% of Patients) | |||||||
| 0 | 1 | 2 | 3 | 4 | P Value** | Weighted Kappa | |
| 1. Sleep during the last week | 54.3 | 29.9 | 9.5 | 4.9 | 1.4 | 0.41 | 0.52 |
| 2. Difficulties falling asleep | 53.2 | 31.0 | 10.1 | 3.7 | 2.0 | 0.79 | 0.48 |
| 3. Difficulties staying asleep | 51.7 | 30.5 | 12.6 | 3.5 | 1.7 | 0.31 | 0.57 |
| 4. Restlessness of legs or arms at night | 53.7 | 28.2 | 11.5 | 4.6 | 2.0 | 0.39 | 0.41 |
| 5. Urge to move your legs or arms | 57.5 | 28.2 | 10.4 | 2.8 | 1.1 | 0.12 | 0.49 |
| 6. Distressing dreams at night | 44.0 | 32.5 | 15.8 | 6.3 | 1.4 | <0.0001 | 0.37 |
| 7. Distressing hallucinations at night | 66.7 | 18.2 | 10.6 | 2.7 | 1.8 | 0.95 | 0.56 |
| 8. Get up at night to pass urine | 52.9 | 27.9 | 13.2 | 4.9 | 1.1 | 0.03 | 0.61 |
| 9. Uncomfortable because of immobility | 55.2 | 25.9 | 12.6 | 4.3 | 2.0 | <0.0001 | 0.58 |
| 10. Pain in arms or legs | 57.5 | 20.4 | 17.0 | 3.7 | 1.4 | <0.0001 | 0.42 |
| 11. Muscle cramps in your arms or legs | 57.5 | 31.0 | 8.6 | 2.3 | 0.6 | 0.01 | 0.58 |
| 12. Painful posturing in the morning | 59.2 | 27.3 | 10.1 | 2.3 | 1.1 | 0.45 | 0.52 |
| 13. Tremor on waking | 58.9 | 22.7 | 12.6 | 3.7 | 2.0 | 0.01 | 0.45 |
| 14. Tired/sleepy in the morning | 53.6 | 26.5 | 13.3 | 5.5 | 1.2 | 0.003 | 0.52 |
| 15. Snoring or difficulties in breathing | 51.2 | 23.9 | 16.9 | 5.5 | 2.5 | 0.16 | 0.29 |
| Average % | 55.1 | 26.9 | 12.3 | 4.0 | 1.7 | — | — |
*
Difference in points represents the absolute value of the difference between the PDSS‐2 self‐completed version and the proxy version (no difference equals = 0 points, while the maximum difference is = 4 points).