Table 3.
Comparison of sleep metrics between HomeSleepNet and a portable PSGa device.
| Sleep metrics | Portable PSG, mean (SD); 95 percentile confidence interval | HomeSleepNet, mean (SD); 95 percentile confidence interval | Difference, mean (SD); 95 percentile confidence interval |
| Total sleep time (minutes) | 375.0 (75.0); 353.1 to 396.9 | 387.0 (74.9); 365.1 to 408.9 | 12.0 (44.1); –0.9 to 24.8 |
| Sleep onset latency (minutes) | 26.4 (53.9); 10.6 to 42.1 | 12.6 (27.9); 4.4 to 20.7 | –13.8 (36.2); –24.4 to –3.2 |
| Sleep efficiency (%) | 81.1 (16.3); 76.3 to 85.8 | 83.5 (15.6); 79.0 to 88.1 | 2.4 (9.3); –0.3 to 5.2 |
| Wake after sleep onset (minutes) | 63.3 (56.9); 46.7 to 79.9 | 65.1 (67.3); 45.5 to 84.8 | 1.8 (53.7); –13.9 to 17.5 |
| REMb latency (minutes) | 80.1 (52.7); 64.7 to 95.5 | 73.1 (61.6); 55.1 to 91.2 | –7.0 (81.1); –30.7 to 16.7 |
| REM (%) | 19.1 (7.3); 17.0 to 21.3 | 19.8 (12.6); 16.1 to 23.5 | 0.7 (10.3); –2.4 to 3.7 |
| NREMc (%) | 61.9 (11.6); 58.6 to 65.3 | 63.7 (14.9); 59.4 to 68.1 | 1.8 (13.2); –2.1 to 5.7 |
| Wake (%) | 18.9 (16.3); 14.2 to 23.7 | 16.5 (15.6); 11.9 to 21.0 | –2.4 (9.3); –5.2 to 0.3 |
aPSG: polysomnography.
bREM: rapid-eye movement.
bNREM: nonrapid-eye movement.