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. 2023 Feb 23;14:1117645. doi: 10.3389/fpsyt.2023.1117645

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Copyright © 2023 Eigl, Urban-Ferreira and Schabus.

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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Actigraphy-recorded changes in sleep efficiency from pre to post in the sleep intervention group (EG1 + EG2) compared to the waiting-list control group (CG). Note that the sleep intervention group improved significantly from pre to post in actigraphy-measured sleep efficiency. Pre- and post-measurements were assessed daily and averaged over a week each. Asterisks represent significant results, **p < 0.01. Error bars display ±1 standard error. EG1 + EG2, pooled sleep intervention group (experimental group 1 + experimental group 2); CG, control group.