Validation of the Sleep-Wake Scoring of a New Wrist-Worn Sleep Monitoring Device

Journal of Clinical Sleep Medicine : JCSM : Official Publication of the American Academy of Sleep Medicine
Wilfred R PigeonTodd M Bishop

Abstract

To test the sleep-wake scoring reliability of a new wrist-worn sleep monitoring device. Twenty-seven adult good sleepers underwent 1 night of polysomnography (PSG) while wearing both the new device (myCadian [MC]; CurAegis Technologies, Rochester, New York, United States) and commercially available actigraphy (Actiwatch 2 [AW]; Philips Respironics, Murrysville, Pennsylvania, United States) on their nondominant wrist. PSG tests were manually stage scored. After excluding missing data, 20 participants had full-night data on all three devices with 17,734 total 30-second epochs. Using PSG as the gold standard, pooled epoch-by-epoch agreement for sleep and wake was calculated for each device using percent agreement and Cohen kappa statistic. Positive predictive values for both sleep and wake epochs, as well as sleep continuity statistics, were calculated. Percent agreement with PSG-scored wake and sleep was 91.3% for MC (kappa = 0.67) and 87.7% for AW (kappa = 0.50). Positive predictive values for sleep epochs were 94.4% and 90.8% for MC and AW, respectively, and 74.5% and 65.6% for wake. Both devices underestimated wake and overestimated sleep compared to PSG. Descriptively, compared to PSG, sleep latency was higher with MC and wak...Continue Reading

Citations

Sep 4, 2020·Translational Vision Science & Technology·Lisa A OstrinMichael J Collins
Nov 28, 2019·Expert Review of Medical Devices·Vanessa IbáñezOmar Cauli

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