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. 2019 May 21;7(5):e11930. doi: 10.2196/11930

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.