DLB | AD dementia | F/χ2 | P-value | |
---|---|---|---|---|
No. of participants | 61 | 26 | ||
Time in bed, min | 488 ± 78 | 560 ± 65 | 17 | <0.01 |
Total sleep time, min | 348 ± 99 | 382 ± 77 | 2.43 | 0.12 |
Sleep efficiency, % | 72 ± 18 | 69 ± 17 | 0.24 | 0.63 |
Initial sleep latency, min | 27 ± 38 | 23 ± 20 | 0.26 | 0.61 |
Initial REM sleep latency, min | 144 ± 101 | 140 ± 105 | 0.03 | 0.87 |
Stage N1, % total sleep time | 12 ± 11 | 16 ± 12 | 1.9 | 0.17 |
Stage N2, % total sleep time | 53 ± 16 | 53 ± 13 | 0.005 | 0.99 |
Stage N3, % total sleep time | 22 ± 16 | 14 ± 9 | 5.6 | 0.02 |
Stage REM, % total sleep time | 14 ± 12 | 17 ± 8 | 1.7 | 0.19 |
Arousal index/hr | 25 ± 15 | 29 ± 17 | 0.88 | 0.35 |
Respiratory disturbance index/hr | 10 ± 11 | 8 ± 12 | 0.55 | 0.46 |
Respiratory disturbance index ≥15, % | 18% | 15% | 0.11 | 0.74 |
Movement-related arousals/hr | 4.3 ± 7 | 5.8 ± 6 | 1.28 | 0.28 |
Spontaneous arousals/hr | 8.7 ± 8 | 9.8 ± 8 | 0.32 | 0.57 |
Oxygen saturation, % | 94 ± 2 | 95 ± 2 | 0.52 | 0.47 |
REM sleep without atonia, % | 71% | 8% | 43.4 | <0.01 |
Absence of REM sleep, % | 19% | 0% | – | – |