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| Wilson’s disease
| Wilson’s disease without RBD | Wilson’s disease with RBD | Healthy controls
| All WD versus HC
| WD + RBD versus WD − RBD
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Dream recall frequency during last months [/week] | 1.84 ± 2.30 | 1.71 ± 2.27 | 3.00 ± 2.61 | 1.95 ± 2.06 | ns | ns |
Nightmare recall frequency during last months [/month] | 1.18 ± 2.33 | 0.86 ± 1.54 | 3.94 ± 5.46 | 0.65 ± 1.03 | ns | 0.040 |
Dream recall frequency, two-week diary [/week] | 1.32 ± 1.45 | 1.27 ± 1.48 | 1.75 ± 1.19 | 1.48 ± 1.41 | ns | ns |
RBD Questionnaire-Hong Kong, total score [0–100] | 15.54 ± 12.13 | 12.79 ± 9.01 | 38.25 ± 11.35 | 13.71 ± 5.67 | ns | <0.001 |
RBDQ-HK1: Did you often have dreams? | | | | | | |
Lifetime occurrence [y/n] | 78.38% | 75.76% | 100.00% | 92.68% | ns | ns |
Recent 1-year frequency [0–4] | 2.32 ± 1.44 | 2.18 ± 1.45 | 3.50 ± 0.58 | 2.78 ± 1.11 | ns | ns |
RBDQ-HK2: Did you often have nightmares? | | | | | | |
Lifetime occurrence [y/n] | 59.46% | 54.55% | 100.00% | 68.29% | ns | ns |
Recent 1-year frequency [0–4] | 0.73 ± 0.99 | 0.49 ± 0.71 | 2.75 ± 0.50 | 0.73 ± 0.81 | ns | 0.001 |
RBDQ-HK3: Did you have dreams with an emotional and sorrowful content? | | | | | | |
Lifetime occurrence [y/n] | 70.27% | 66.67% | 100.00% | 75.61% | ns | ns |
Recent 1-year frequency [0–4] | 0.92 ± 1.04 | 0.82 ± 0.92 | 1.75 ± 1.71 | 1.00 ± 0.84 | ns | ns |
RBDQ-HK4: Did you have dreams with a violent or aggressive content (e.g., fighting with someone)? | | | | | | |
Lifetime occurrence [y/n] | 43.24% | 39.39% | 75.00% | 68.29% | 0.026 | ns |
Recent 1-year frequency [0–4] | 0.43 ± 0.80 | 0.33 ± 0.69 | 1.25 ± 1.26 | 0.51 ± 0.64 | ns | 0.028 |
RBDQ-HK5: Did you have dreams with a frightening and horrifying content (e.g., being chased by a ghost)? | | | | | | |
Lifetime occurrence [y/n] | 37.84% | 33.33% | 75.00% | 65.85% | 0.013 | ns |
Recent 1-year frequency [0–4] | 0.43 ± 0.77 | 0.30 ± 0.59 | 1.50 ± 1.29 | 0.29 ± 0.46 | ns | 0.051 |
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