Table 2.
Descriptive statistics of stage II vPSG parameters (N = 19).
| Parameter | Mean | Median | Minimum | Maximum | 5th Percentile | 95th Percentile | Standard Deviation |
|---|---|---|---|---|---|---|---|
| BEI | 4.32 | 3.70 | 1.50 | 9.40 | 1.50 | 9.40 | 2.15 |
| BBI | 5.49 | 3.80 | 1.20 | 14.70 | 1.20 | 14.70 | 3.91 |
| Apnea to bruxism | 0.52 | 0.20 | 0.00 | 2.30 | 0.00 | 2.30 | 0.69 |
| Arousal to bruxism | 1.43 | 0.90 | 0.00 | 3.50 | 0.00 | 3.50 | 1.06 |
| Phasic bruxism | 2.54 | 2.10 | 0.00 | 7.70 | 0.00 | 7.70 | 1.97 |
| Tonic bruxism | 0.91 | 0.90 | 0.10 | 3.20 | 0.10 | 3.20 | 0.76 |
| Mixed bruxism | 0.79 | 0.70 | 0.00 | 3.80 | 0.00 | 3.80 | 0.78 |
| AHI | 2.36 | 2.00 | 0.00 | 7.40 | 0.00 | 7.40 | 2.06 |
| ODI | 3.14 | 2.00 | 0.00 | 8.00 | 0.00 | 8.00 | 2.44 |
| Snore | 5.64 | 0.20 | 0.00 | 52.10 | 0.00 | 52.10 | 14.84 |
| TST | 448.34 | 461.80 | 281.40 | 525.60 | 281.40 | 525.60 | 60.52 |
| SL | 22.81 | 11.60 | 0.40 | 130.50 | 0.40 | 130.50 | 30.85 |
| REML | 82.52 | 66.50 | 14.50 | 256.00 | 14.50 | 256.00 | 53.39 |
| WASO | 13.73 | 11.00 | 3.00 | 34.50 | 3.00 | 34.50 | 10.17 |
| SE | 89.76 | 93.40 | 58.40 | 98.40 | 58.40 | 98.40 | 10.28 |
| N1 | 2.67 | 2.30 | 0.60 | 7.22 | 0.60 | 7.22 | 1.86 |
| N2 | 46.95 | 48.10 | 27.60 | 70.50 | 27.60 | 70.50 | 10.80 |
| N3 | 25.41 | 24.10 | 6.10 | 54.90 | 6.10 | 54.90 | 11.00 |
| REM | 24.97 | 25.70 | 15.30 | 34.30 | 15.30 | 34.30 | 5.81 |
| Arousals | 4.43 | 3.00 | 1.00 | 19.30 | 1.00 | 19.30 | 4.21 |
| Average SpO2 | 95.15 | 95.50 | 93.20 | 96.70 | 93.20 | 96.70 | 0.96 |
| Minimal SpO2 | 89.16 | 91.00 | 72.00 | 95.00 | 72.00 | 95.00 | 5.78 |
| SpO2 < 90% | 0.05 | 0.00 | 0.00 | 0.50 | 0.00 | 0.50 | 0.12 |
| Average desaturation drop | 3.03 | 3.10 | 0.00 | 3.80 | 0.00 | 3.80 | 0.77 |
| Average pulse | 61.93 | 59.30 | 48.90 | 75.70 | 71.00 | 155.00 | 8.82 |
| Maximal pulse | 94.89 | 93.00 | 71.00 | 155.00 | 48.90 | 75.70 | 17.11 |
| Minimal pulse | 49.84 | 47.00 | 38.00 | 64.00 | 38.00 | 64.00 | 7.68 |
BEI—bruxism episode index, BBI—bruxism burst index, AHI—apnea/hypopnea index, ODI—oxygen desaturation index, TST—total sleep time, SL—sleep latency, REML—rapid eye movement latency, WASO—wake after sleep onset, SE—sleep efficiency, N1—non-rapid eye movement 1, N2—non-rapid eye movement 2, N3—non-rapid eye movement 3, REM—rapid eye movement.