Validation of Fitbit Charge 2 Sleep and Heart Rate Estimates Against Polysomnographic Measures in Shift Workers: Naturalistic Study.

J Med Internet Res · 2021 · PMC8527385 · PMID 34609317

Europe PMC DOI

hedged sentence

0.0800

closest p · 1.6× alpha

0.0800

boldest claim

The sentences

showed a trendP =.08so close (0.05 < p ≤ 0.1)

Nevertheless, deep d showed a trend toward a bias of 11.2 minutes with N1 on ( P =.08), likely pointing to a slight underestimation with Fitbit of N3 sleep.

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