Table 3.
Sleep Architecture at PSG1 and PSG2.
| PSG1 | PSG2 | P Value | |
|---|---|---|---|
| Sleep efficiency, % | 71.6 ± 11.9 | 73.4 ± 11.3 | 0.722 |
| TST, min | 28.1 ± 66.6 | 337.4 ± 49.6 | 1.000 |
| Sleep stage, % of TST | |||
| 1 | 23.1 ± 11.0 | 28.1 ± 15.7 | 0.286 |
| 2 | 45.3 ± 12.2 | 42.4 ± 7.6 | 0.722 |
| 3 | 16.0 ± 10.1 | 13.4 ± 10.1 | 0.374 |
| REM | 15.6 ± 8.4 | 16.1 ± 6.7 | 0.790 |
| REM sleep periods, no. | 2.8 ± 1.1 | 2.3 ± 0.8 | 0.132 |
| REM sleep latency, min | 115.6 ± 74.5 | 166.9 ± 123.9 | 0.182 |
| PLMI | 4.6 ± 11.0 | 9.7 ± 16.1 | 0.176 |
| AHI | 9.0 ± 13.4 | 17.0 ± 21.9 | 0.062 |
PSG1 refers to polysomnography performed at baseline when the diagnosis of rapid eye movement (REM) sleep behavior disorder (RBD) was confirmed; PSG2, polysomnography performed after a mean clinical follow-up of 5 years; TST, total sleep time; PLMI, periodic leg movement index; AHI, apnea-hypopnea index.