Table 5. Comparison of sub-items on the MDS-UPDRS part III between patients with PD with and without pRBD as evaluated by the Japanese version of the RBD screening questionnaire.
| RBD (-) | RBD (+) | P value | |
|---|---|---|---|
| Part III items | |||
| Speech | 0.75 | 1.04 | 0.0005 |
| Facial expression | 0.81 | 1.01 | 0.013 |
| Rigidity of neck and four extremities | 5.84 | 6.93 | 0.001 |
| Finger taps | 2.15 | 2.56 | 0.037 |
| Hand movements | 1.15 | 1.46 | 0.027 |
| Pronation/supination | 2.50 | 3.04 | 0.001 |
| Toe tapping | 2.18 | 2.51 | 0.043 |
| Leg agility | 1.63 | 1.89 | 0.06 |
| Arising from chair | 0.46 | 0.85 | < 0.0001 |
| Gait | 0.98 | 1.49 | < 0.0001 |
| Freezing of gait | 0.26 | 0.52 | 0.003 |
| Postural stability | 0.72 | 1.11 | 0.002 |
| Posture | 0.96 | 1.41 | < 0.0001 |
| Global spontaneity of movement | 1.04 | 1.46 | < 0.0001 |
| Postural tremor of hands | 0.80 | 0.75 | 0.60 |
| Kinetic tremor of hands | 0.76 | 0.77 | 0.90 |
| Rest tremor amplitude | 0.86 | 0.87 | 0.97 |
| Constancy of rest tremor | 0.63 | 0.57 | 0.60 |
pRBD: probable REM sleep behavior disorder.