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. 2023 Jul 10;14:1211561. doi: 10.3389/fpsyt.2023.1211561

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Copyright © 2023 Yao, Zhang and Lam.

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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Forest plot of light therapy on self-reported instrument and physiological sleep quality indexes. (A) Forest plot of light therapy on PSQI. (B) Forest plot of light therapy on total sleep time (min). (C) Forest plot of light therapy on sleep efficiency (%).