Table 2.
Sleep summary: sleep efficiency (SE)
| Device | n | PSG Mean ± SD |
Device Mean ± SD |
Bias | Lower limit | Upper limit | t (p) | Effect size | R 2 (p) |
|---|---|---|---|---|---|---|---|---|---|
| Actiwatch | 98 | 87.1 ± 8.5 | 92.1 ± 4.1 | 5.0 | –8.5 | 18.4 | 7.3 (<0.001) | 0.74 | 0.51 (<0.001) |
| Fatigue Science Readiband | 41 | 86.7 ± 10.0 | 89.4 ± 11.0 | 2.8 | –19.4 | 24.9 | 1.6 (0.117) | 0.26 | 0.01 (0.487) |
| Fitbit Alta HR | 49 | 88.6 ± 6.9 | 89.4 ± 4.0 | 0.9 | –8.4 | 10.2 | 1.3 (0.191) | 0.16 | 0.45 (<0.001) |
| Garmin Fenix 5S | 29 | 86.1 ± 11.0 | 96.6 ± 2.9 | 10.6 | –9.0 | 30.1 | 5.8 (<0.001) | 1.29 | 0.82 (<0.001) |
| Garmin Vivosmart 3 | 43 | 86.4 ± 10.1 | 96.5 ± 3.1 | 10.1 | –7.3 | 27.6 | 7.6 (<0.001) | 1.34 | 0.76 (<0.001) |
| Earlysense Live | 51 | 87.8 ± 7.3 | 90.8 ± 6.1 | 2.9 | –9.2 | 15.1 | 3.4 (0.001) | 0.43 | 0.04 (0.148) |
| ResMed S+ | 51 | 88.0 ± 7.0 | 88.0 ± 8.3 | 0.0 | –14.7 | 14.7 | 0.0 (0.996) | 0.00 | 0.04 (0.158) |
| SleepScore Max | 42 | 86.2 ± 10.2 | 87.8 ± 7.8 | 1.6 | –12.6 | 15.8 | 1.5 (0.150) | 0.18 | 0.13 (0.017) |
Summary results for the percentage of SE for the devices versus polysomnography (PSG). See Table 1 caption for additional table details.