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. 2020 Aug 24;8(8):e17755. doi: 10.2196/17755

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©Kyungmi Chung, Seoyoung Kim, Eun Lee, Jin Young Park. Originally published in JMIR mHealth and uHealth (http://mhealth.jmir.org), 24.08.2020.

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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Scatter plots showing the Spearman rank correlations (n=40) between (A) subjective sleep quality and subjective memory complaints and (B) subjective sleep quality and self-reported depressive symptom severity. PSQI-K: Korean version of the Pittsburgh Sleep Quality Index; SGDS-K: Korean version of the 15-question Geriatric Depression Scale; SMCQ: Subjective Memory Complaints Questionnaire.