Table 6.
Sleep summary: deep sleep
| Device | n | PSG Mean ± SD |
Device Mean ± SD |
Bias | Lower limit | Upper limit | t (p) | Effect size | R 2 (p) |
|---|---|---|---|---|---|---|---|---|---|
| Fitbit Alta HR | 49 | 81.1 ± 28.1 | 75.0 ± 21.1 | –6.0 | –73.8 | 61.7 | –1.2 (0.219) | –0.24 | 0.08 (0.052) |
| Garmin Fenix 5S | 29 | 63.3 ± 22.9 | 69.4 ± 29.3 | 6.1 | –53.0 | 65.1 | 1.1 (0.278) | 0.23 | 0.07 (0.170) |
| Garmin Vivosmart 3 | 43 | 66.7 ± 23.1 | 70.4 ± 28.9 | 3.7 | –57.5 | 64.9 | 0.8 (0.431) | 0.14 | 0.06 (0.130) |
| Earlysense Live | 51 | 79.6 ± 30.3 | 115.5 ± 42.9 | 35.9 | –66.8 | 138.6 | 5.0 (<0.001) | 0.96 | 0.11 (0.017) |
| ResMed S+ | 51 | 81.5 ± 27.8 | 96.0 ± 30.5 | 14.5 | –54.8 | 83.8 | 3.0 (0.004) | 0.49 | 0.01 (0.504) |
| SleepScore Max | 42 | 66.8 ± 23.7 | 87.4 ± 28.9 | 20.7 | –36.3 | 77.7 | 4.7 (<0.001) | 0.77 | 0.05 (0.166) |
Summary results for total minutes of deep sleep for the devices versus polysomnography (PSG). For PSG, deep sleep was calculated as the N3 sleep stage. Results are shown for all devices that output sleep stage classifications. See Table 1 caption for additional table details.