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. 2021 Jul 6;23(7):e27029. doi: 10.2196/27029

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©Shanzun Wei, Ming Ma, Changjing Wu, Botao Yu, Lisha Jiang, Xi Wen, Fudong Fu, Ming Shi. Originally published in the Journal of Medical Internet Research (https://www.jmir.org), 06.07.2021.

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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The percentage of valid searches for lower urinary tract symptoms–related terms. A: The percentage of valid term inquiries. B: The frequency of valid term inquiries.