Table 7.
Sleep summary: rapid eye movement (REM) 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 | 107.4 ± 20.6 | 96.0 ± 22.9 | –11.4 | –60.2 | 37.3 | –3.3 (0.002) | –0.52 | 0.01 (0.426) |
| Garmin Fenix 5S | 29 | 111.4 ± 23.8 | 120.0 ± 37.8 | 8.6 | –74.9 | 92.1 | 1.1 (0.277) | 0.27 | 0.19 (0.018) |
| Garmin Vivosmart 3 | 43 | 109.7 ± 22.6 | 118.1 ± 40.4 | 8.4 | –75.9 | 92.6 | 1.3 (0.200) | 0.25 | 0.28 (<0.001) |
| Earlysense Live | 51 | 104.7 ± 22.2 | 104.7 ± 43.1 | 0.0 | –82.9 | 82.9 | 0.0 (0.997) | 0.00 | 0.36 (<0.001) |
| ResMed S+ | 51 | 104.9 ± 20.7 | 73.0 ± 25.1 | –31.9 | –85.5 | 21.8 | –8.5 (<0.001) | –1.37 | 0.04 (0.159) |
| SleepScore Max | 42 | 110.4 ± 22.4 | 74.6 ± 23.0 | –35.8 | –95.3 | 23.7 | –7.8 (<0.001) | –1.57 | 0.00 (0.856) |
Summary results for total minutes of REM sleep for the devices versus polysomnography (PSG). Results are shown for all devices that output sleep stage classifications. See Table 1 caption for additional table details.