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. 2020 Jun 1;8(6):e17372. doi: 10.2196/17372

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©Xu Tian, Ling-Li Xu, Xiao-Ling Liu, Wei-Qing Chen. Originally published in JMIR mHealth and uHealth (http://mhealth.jmir.org), 01.06.2020.

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 JMIR mHealth and uHealth, is properly cited. The complete bibliographic information, a link to the original publication on http://mhealth.jmir.org/, as well as this copyright and license information must be included.

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Funnel plot of PDR between the EPE and SPE groups. The vertical axis represents the standard error (SE) of effect size and x-axis indicates pooled risk ratio (RR). Symmetrical funnel plot indicates the absence of publication bias. PDR: polyp detection rate; EPE: enhanced patient education; SPE: standard patient education.