255 Clustering in Central Disorders of Hypersomnolence Table 2: Continued. Variable (>50% data available) Cluster 5 Cluster 6 Effect size Corrected p-value n5 Median (IQR) / Percentage n6 Median (IQR) / Percentage Hypnagogic hallucinations frequency 156 Never: 91.0% <1/year: 0.6% 1/year-1/month: 2.6% 1/month-1/week: 4.5% 1/ week-1/day: 1.3% >1/day: 0.0% 158 Never: 98.7% <1/year: 0.6% 1/year-1/month: 0.6% 1/month-1/week: 0.0% 1/week-1/day: 0.0% >1/day: 0.0% -0.175 0.0168 Number of scheduled naps per day 154 Never: 47.4% 1/day: 40.9% >1/day: 11.7% 152 Never: 63.2% 1/day: 32.9% >1/day: 3.9% -0.176 0.0168 Hypnagogic hallucinations – appears waking up† 125 8.0% 145 0.7% 0.184 0.0183 Sleep paralysis frequency 156 Never: 89.7% <1/year: 0.6% 1/year-1/month: 4.5% 1/month1/week: 2.6% 1/week-1/day: 1.9% >1/day: 0.6% 158 Never: 97.5% <1/year: 1.3% 1/year-1/month: 1.3% 1/month-1/week: 0.0% 1/week-1/day: 0.0% >1/day: 0.0% -0.161 0.0273 PSG – PLMI 114 1.0 (0.0-4.5) 91 3.7 (0.0-12.1) -0.196 0.0281 Feeling refreshed after sleep 103 No: 43.7% Not always: 26.2% Yes: 30.1% 89 No: 24.7% Not always: 30.3% Yes: 44.9% -0.198 0.0327 9
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