Table 3.
Comparison of Sleep Metrics Between PSG Labels and Predictions from the SoundSleepNet Model
| Sleep Metrics | PSG | SoundSleepNet | Difference | Absolute Difference |
|---|---|---|---|---|
| TST (mins) | 369.8 ± 61.9 (360.5, 379.1) | 363.9 ± 65.2 (354.1, 373.7) | −5.9 ± 43.2 (−12.3, 0.6) | 28.4 ± 33.1 (23.4, 33.3) |
| SOL (mins) | 16.4 ± 25.3 (12.6, 20.1) | 14.9 ± 22.2 (11.6, 18.3) | −1.4 ± 19.5 (−4.4, 1.5) | 9.4 ± 17.1 (6.9, 12.0) |
| SE (%) | 79.4 ± 12.9 (77.5, 81.3) | 78.1 ± 13.6 (76.1, 80.1) | −1.3 ± 9.1 (−2.7, 0.1) | 6.1 ± 7.0 (5.0, 7.1) |
| WASO (mins) | 79.1 ± 50.4 (71.6, 86.7) | 86.4 ± 55.4 (78.1, 94.7) | 7.3 ± 40.9 (1.2, 13.4) | 27.5 ± 31.1 (22.9, 32.2) |
| RL (mins) | 132.9 ± 82.0 (120.4, 145.4) | 90.9 ± 83.7 (78.1, 103.6) | −42.0 ± 95.0 (−56.5, −27.6) | 66.0 ± 80.1 (53.8, 78.2) |
| REM (%) | 15.5 ± 6.3 (14.6, 16.5) | 16.5 ± 10.3 (15.0, 18.1) | 1.0 ± 9.7 (−0.4, 2.5) | 7.0 ± 6.7 (6.0, 8.0) |
| Light (%) | 55.3 ± 10.5 (53.8, 56.9) | 51.7 ± 13.2 (49.7, 53.7) | −3.6 ± 11.7 (−5.4, −1.8) | 9.3 ± 8.0 (8.1, 10.5) |
| Deep (%) | 8.6 ± 7.1 (7.5, 9.6) | 9.9 ± 8.7 (8.6, 11.2) | 1.3 ± 8.6 (0.0, 2.6) | 6.2 ± 6.1 (5.3, 7.1) |
Notes: Difference in sleep metrics was calculated for each subject (SoundSleepNet – PSG) while absolute difference considers the magnitude of difference. Values are presented in the format mean ± SD (95% confidence interval).
Abbreviations: TST, total sleep time; SOL, sleep onset latency; SE, sleep efficiency; WASO, wake after sleep onset; RL, REM latency.