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Bland–Altman plots of GT3X+ and AWS in 22 adults for (A) total sleep time: GT3X+: CK versus AWS, (B) WASO: GT3X+: CK versus AWS, (C) total sleep time: GT3X+: Sadeh versus AWS, and (D) WASO: GT3X+: Sadeh versus AWS. The dotted line indicates the mean of the differences or bias, and the dashed lines indicate the lower and upper 95% limits of agreement.
Abbreviations: AWS, Actiwatch Spectrum; CK, Cole–Kripke; WASO, wake after sleep onset.
