Table 3.
Differences in PSG variables across iRBD groups.
| PSG variables |
No trauma
(n = 71) |
Trauma greater than 12 months prior to RBD symptom onset (n = 14) | Trauma within 12 months of RBD symptom onset (n = 37) | P-value |
|---|---|---|---|---|
| REM sleep latency (min) | 137 ± 78.72 | 117 ± 65.92 | 106 ± 68.92 | 0.45 |
| Sleep latency (min) | 45 ± 35.60 | 41 ± 32.29 | 44 ± 74.03 | 0.16 |
| WASO (min) | 120 ± 54.15 | 105 ± 42.27 | 102 ± 55.36 | 0.28 |
| REM sleep (%) | 15 ± 7.49 | 18 ± 9.50 | 19 ± 9.20 | 0.10 |
| Stage N1 (%) | 7 ± 10.29 | 5 ± 7.39 | 6 ± 8.28 | 0.67 |
| Stage N2 (%) | 60 ± 17.38 | 66 ± 16.33 | 56 ± 16.79 | 0.19 |
| Stage N3 (%) | 10 ± 11.76 | 5 ± 5.56 | 13 ± 12.20 | 0.05 |
| Sleep efficiency (%) | 64 ± 14.58 | 66 ± 16.43 | 68 ± 18.34 | 0.26 |
Differences in PSG variables across groups (no trauma history, n = 53; trauma which occurred >12 months prior to RBD diagnosis, n = 13; trauma which occurred within 12 months prior to RBD diagnosis, n = 30). Results are reported as mean ± standard deviation or number. PSG variables did not differ significantly across groups (p > 0.05).