Table 4.
Average sleep duration by the BASIS smartwatch versus iSenseSleep algorithm, and statistical significance tests.
| Subject ID | Min, mean (SD) | P valueb | Algorithm estimate (Under or over) | Sleep deprived? | ||
|
|
BASIS | iSenseSleep |
|
BASIS | Algorithm | |
| S01 | 393 (10) | 418 (14) | .31 | —a | Yes | No |
| S02 | 402 (15) | 507 (16) | <.001 | Over | Yes | No |
| S03 | 455 (13) | 377 (34) | <.001 | Under | No | Yes |
| S04 | 446 (15) | 444 (25) | .46 | — | No | No |
| S05 | 429 (15) | 481 (23) | <.001 | Over | No | No |
| S06 | 473 (16) | 478 (25) | .27 | — | No | No |
| S07 | 377 (22) | 377 (24) | .50 | — | Yes | Yes |
| S08 | 450 (13) | 454 (35) | .38 | — | No | No |
| S09 | 482 (14) | 459 (24) | .06 | — | No | No |
| S10 | 478 (16) | 446 (36) | .23 | — | No | No |
| S11 | 409 (19) | 378 (45) | .002 | Under | Yes | Yes |
| S12 | 417 (24) | 374 (16) | .20 | — | No | Yes |
| S13 | 462 (16) | 346 (25) | .003 | Under | No | Yes |
| S14 | 452 (29) | 426 (39) | .002 | Under | No | No |
aThe iSenseSleep algorithm estimates sleep duration accurately (does not underestimate or overestimate)
bResults were deemed statistically significant at P<.05: the algorithms differ.