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. 2021 Nov 4;12:747139. doi: 10.3389/fpsyt.2021.747139

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Copyright © 2021 Ma, Yang, Yang, Kang, Wang, Zhang, Wang, Zong, Wang, Bai, Guo, Yao, Fang and Liu.

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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Test information functions (TIFs) curves of PHQ-9, HAMD-6, and HAMD-17. (A) Test information function for PHQ-9, HAMD-6, and HAMD-17. (B) Standard error for PHQ-9, HAMD-6, and HAMD-17. Below the dotted line indicates that the reliability was >0.9.