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. 2019 Dec 10;13:1318. doi: 10.3389/fnins.2019.01318

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Copyright © 2019 Rodriguez-Morilla, Estivill, Estivill-Domènech, Albares, Segarra, Correa, Campos, Rol and Madrid.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Decision tree and cut values used by the model to generate five final classes: DSPD (with both delayed mid-sleep and central time of maximal activation), OI (delayed mid-sleep time, but not central time of maximal activation), MI (normal sleep phase and low relative amplitude and CFI), mild insomnia (which only differed from the controls in terms of their sleep rhythm robustness), and healthy controls. TAP-L5h, midpoint timing of the five consecutive hours of lowest TAP values; TAP-M10h, midpoint timing of the 10 consecutive hours of maximal TAP values; TAP-AR, relative amplitude of TAP rhythm; Sleep CFI, circadian function index of sleep rhythm.