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. 2026 Feb 24;8:1735652. doi: 10.3389/frph.2026.1735652

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© 2026 Sun, Yu, Zeng, Song, Ji, Liu, Peng, Liu, Wang and Wu.

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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Flowchart illustrating a systematic review process. Begins with 326 records from database searches and 435 additional records. After removing duplicates, 642 records remain. Following abstract screening, 219 records are excluded. After full-text screening of 176 records, 247 are excluded. The process concludes with studies included for analysis: 91 for delayed ratio, 108 for symptom duration, and others for meta-analysis. — Flow diagram of identification and eligibility of publications.