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. 2022 Jul 13;24(7):e37142. doi: 10.2196/37142

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©Yue Tong Leung, Farzad Khalvati. Originally published in the Journal of Medical Internet Research (https://www.jmir.org), 13.07.2022.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work, first published in the Journal of Medical Internet Research, is properly cited. The complete bibliographic information, a link to the original publication on https://www.jmir.org/, as well as this copyright and license information must be included.

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Trend on the number of posts mentioning each of the topics in the lexical approach: (A) educational problems, (B) occupational problems, (C) lonely, (D) fear of coronavirus, (E) pandemic development.