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. 2019 Jul 29;21(7):e14210. doi: 10.2196/14210

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©Yinzi Jin, Mingxia Jing, Xiaochen Ma. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 29.07.2019.

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 http://www.jmir.org/, as well as this copyright and license information must be included.

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Independent association between desktop or cellphone ownership and cognitive function over time. Adjusted for demographic (age, sex, education, marriage, rural or urban residence) and health behavior (smoke, drink) as well as health condition risk factors (self-reported hypertension, diabetes, and stroke).