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. 2023 Jul 17;25:e46298. doi: 10.2196/46298

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©Peiyi Li, Chenyang Zhang, Shuanliang Gao, Yanbo Zhang, Xiaolong Liang, Chengdi Wang, Tao Zhu, Weimin Li. Originally published in the Journal of Medical Internet Research (https://www.jmir.org), 17.07.2023.

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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Daily internet usage among middle-aged and older adults: CHARLS 2011-2018. The y axis is the percentage of people who used the internet in their daily lives at each follow-up visit. CHARLS: China Health and Retirement Longitudinal Study.