Table 2.
Sleep architecture parameters (mean ± SD).
| Overall | Negative-left | Negative-right | Statistics | |||
|---|---|---|---|---|---|---|
| N = 46 | N = 22 | N = 24 | t(44) | P | Padj | |
| N1 (%) | 3.9 ± 2.7 | 4.4 ± 2.8 | 3.4 ± 2.6 | 1.3 | 0.20 | 0.35 |
| N2 (%) | 51.1 ± 6.2 | 52.0 ± 6.1 | 50.3 ± 6.3 | 0.9 | 0.37 | 0.46 |
| N3 (%) | 24.5 ± 5.7 | 24.0 ± 5.8 | 25.1 ± 5.7 | −0.7 | 0.51 | 0.59 |
| REM (%) | 20.5 ± 4.3 | 19.7 ± 4.2 | 21.3 ± 4.3 | −1.3 | 0.22 | 0.35 |
| N2-N3 (%) | 75.6 ± 4.7 | 75.9 ± 4.0 | 75.4 ± 5.3 | 0.4 | 0.70 | 0.73 |
| N1-N2-N3 (%) | 79.5 ± 4.3 | 80.3 ± 4.2 | 78.7 ± 4.3 | 1.3 | 0.22 | 0.35 |
| N1 (min) | 18.0 ± 12.1 | 20.1 ± 12.1 | 16.1 ± 12.0 | 1.1 | 0.27 | 0.36 |
| N2 (min) | 243.0 ± 34.3 | 241.1 ± 34.5 | 244.7 ± 34.8 | −0.3 | 0.73 | 0.73 |
| N3 (min) | 116.7 ± 28.4 | 111.0 ± 27.5 | 122.0 ± 28.7 | −1.3 | 0.19 | 0.35 |
| REM (min) | 98.0 ± 23.6 | 91.9 ± 24.1 | 103.6 ± 22.2 | −1.7 | 0.10 | 0.35 |
| N2-N3 (min) | 359.7 ± 34.9 | 352.1 ± 33.1 | 366.7 ± 35.7 | −1.4 | 0.16 | 0.35 |
| N1-N2-N3 (min) | 377.7 ± 30.8 | 372.2 ± 31.4 | 382.8 ± 30.0 | −1.2 | 0.25 | 0.36 |
| WASO (min) | 22.6 ± 24.6 | 27.6 ± 27.2 | 18.0 ± 21.6 | 1.3 | 0.19 | 0.35 |
| total sleep (min) | 475.7 ± 36.9 | 464.1 ± 39.7 | 486.4 ± 31.4 | −2.1 | 0.04 | 0.21 |
| sleep latency (min) | 14.9 ± 16.7 | 20.6 ± 21.5 | 9.6 ± 8.0 | 2.4 | 0.02 | 0.18 |
| sleep efficiency (%) | 89.4 ± 5.6 | 87.2 ± 6.2 | 91.5 ± 4.1 | −2.8 | 0.008 | 0.13 |
WASO: wake after sleep onset; Padj: adjusted P value using FDR. Entries in bold indicate significance (P < 0.05).