Table 1.
Sleep-Wake Summary Agreement
| Outcome | Device | n | Device Mean (SD) | Reference Mean (SD) |
|---|---|---|---|---|
| TIB | Fatigue Science Readiband | 112 | 459.0 (85.2) | 437.4 (78.9) |
| Fitbit Inspire HR | 106 | 459.8 (78.6) | 443.3 (73.6) | |
| Oura Ring | 111 | 460.0 (90.3) | 439.9 (74.0) | |
| Polar Vantage V Titan | 103 | 452.0 (75.6) | 445.5 (69.4) | |
| TST | Actiwatch | 113 | 406.1 (77.4) | 401.3 (82.6) |
| Fatigue Science Readiband | 112 | 406.0 (89.4) | 401.0 (82.9) | |
| Fitbit Inspire HR | 106 | 406.4 (70.1) | 406.6 (78.8) | |
| Oura Ring | 111 | 412.5 (77.5) | 403.1 (78.8) | |
| Polar Vantage V Titan | 103 | 418.5 (74.0) | 411.6 (72.1) | |
| SE | Actiwatch | 113 | 92.4 (3.2) | 91.2 (6.9) |
| Fatigue Science Readiband | 112 | 88.0 (7.5) | 91.3 (7.0) | |
| Fitbit Inspire HR | 106 | 94.6 (2.9) | 91.3 (7.0) | |
| Oura Ring | 111 | 89.8 (4.9) | 91.2 (7.0) | |
| Polar Vantage V Titan | 103 | 92.5 (4.6) | 92.2 (4.6) | |
| SOL | Actiwatch | 113 | 2.3 (1.7) | 8.5 (5.6) |
| Fatigue Science Readiband | 112 | 18.8 (17.3) | 8.5 (5.6) | |
| Fitbit Inspire HR | 106 | 4.9 (3.4) | 8.6 (5.6) | |
| Oura Ring | 111 | 7.8 (5.5) | 8.5 (5.6) | |
| Polar Vantage V Titan | 103 | 0.6 (1.0) | 8.5 (5.4) | |
| WASO | Actiwatch | 113 | 30.2 (12.7) | 28.1 (22.5) |
| Fatigue Science Readiband | 112 | 21.2 (23.8) | 27.9 (22.5) | |
| Fitbit Inspire HR | 106 | 38.0 (13.1) | 28.1 (21.9) | |
| Oura Ring | 111 | 39.7 (32.0) | 28.4 (22.5) | |
| Polar Vantage V Titan | 103 | 25.8 (8.6) | 25.4 (17.5) |
Notes: Sleep-wake summary agreement between devices and reference. The sleep diary served as reference for TIB, and the Dreem headband served as reference for TST, SE, SOL, and WASO. All nights with available data for both the device and reference were included in analyses, with the total number of nights (n) indicated in each row. Mean and SD are shown for each device and reference.
Abbreviations: SD, standard deviation; SE, sleep efficiency; SOL, sleep onset latency; TIB, time in bed; TST, total sleep time; WASO, wake after sleep onset.