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. 2022 Sep 13;10:986934. doi: 10.3389/fpubh.2022.986934

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Copyright © 2022 Wang, Zhao, Zhai, Ye, Bu and Fan.

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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Trajectory changes of mental health problems among colleges students during the pandemic. (A) The trajectory of PTSD; PTSD calculated using the IES-6, with a clinical cut-off score of 1.5. (B) The trajectory of depression; Depression calculated using the PHQ-9, with a clinical cut-off score of 7. (C) The trajectory of depression; Depression calculated using the PHQ-8 (exclude the sleep-related item), with a clinical cut-off score of 7.