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Lack of Agreement between Polysomnography and Accelerometry Devices for Measuring Sleep Efficiency and Movement in University Students

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Carazo Vargas, Pedro
Salazar Obando, Joshua
Vargas Montero, Andrea
Alvarado Barrantes, Ricardo
Siles Canales, Francisco
Moncada Jiménez, José

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Abstract

The aim of the study was to determine the convergent validity of a portable polysomnograph and an accelerometer for measuring sleep efficiency and movement in college students. Volunteers were 29 healthy students (males = 15, females = 14) who simultaneously wore the Nox T3 portable polysomnograph and the ActiGraph wGT3X-BT accelerometer. Both devices recorded x, y, and z coordinates at 10 Hz starting at 20:00:00 until the following morning. Repeated measures, concordance correlation coefficient, graphical, mixed-model, and Bayesian approaches were used to determine convergent validity. The sleep efficiency recorded by the Nox T3 was lower than the recorded by the ActiGraph wGT3X-BT (73.9 ± 24.3% vs. 86.1 ± 9.8%, p = .024; 95%CI = 1.8, 22.7), and both devices showed a poor concordance correlation coefficient (−0.09, 95%CI = −0.29, 0.13). The sleep monitor devices should not be used interchangeably to determine sleep efficiency and movement in college students.

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Tiene adjunto el informe del proyecto

Keywords

Mixed-model, Validity, Device, Monitor, Intermethod

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https://www.tandfonline.com/doi/full/10.1080/1091367X.2020.1819814?scroll=top&needAccess=true

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