Table 4. Comparison of sub-items on the MDS-UPDRS parts I and II between patients with PD with and without pRBD as evaluated by the Japanese version of the RBD screening questionnaire.
| pRBD (-) | pRBD (+) | p value | |
|---|---|---|---|
| Part I items | |||
| Cognitive impairment | 0.20 | 0.24 | 0.48 |
| Hallucinations | 0.12 | 0.31 | < 0.0001 |
| Depressed mood | 0.38 | 0.45 | 0.34 |
| Anxious mood | 0.53 | 0.60 | 0.43 |
| Apathy | 0.31 | 0.51 | 0.007 |
| Dopamine dysregulation syndrome | 0.03 | 0.10 | 0.021 |
| Sleep problems | 0.95 | 1.41 | < 0.0001 |
| Daytime sleepiness | 1.25 | 1.56 | 0.0005 |
| Pain | 0.80 | 1.01 | 0.055 |
| Urinary problems | 0.95 | 1.40 | < 0.0001 |
| Constipation | 1.30 | 1.70 | 0.002 |
| Light headedness on standing | 0.42 | 0.51 | 0.239 |
| Fatigue | 0.98 | 1.28 | 0.003 |
| Part II items | |||
| Speech | 0.75 | 1.13 | 0.0001 |
| Saliva & Drooling | 0.92 | 1.34 | 0.0006 |
| Chewing & Swallowing | 0.38 | 0.51 | 0.086 |
| Eating tasks | 0.68 | 0.86 | 0.025 |
| Dressing | 0.87 | 1.23 | < 0.0001 |
| Hygiene | 0.75 | 1.00 | 0.002 |
| Handwriting | 0.88 | 1.15 | 0.004 |
| Doing hobbies | 1.01 | 1.40 | 0.0005 |
| Turning in bed | 0.75 | 1.14 | < 0.0001 |
| Tremor | 1.00 | 1.24 | 0.005 |
| Getting out of bed, or deep chair | 0.96 | 1.41 | < 0.0001 |
| Walking and balance | 1.20 | 1.61 | 0.0002 |
| Freezing | 0.81 | 1.21 | 0.001 |
pRBD: probable REM sleep behavior disorder.