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. 2012 Mar 12;14(2):e42. doi: 10.2196/jmir.1941

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©Kenneth Rockwood, An Zeng, Chris Leibman, Lisa Mucha, Arnold Mitnitski. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 12.03.2012.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0/), 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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Mean number of dementia symptoms: instrumental activities of daily living (blue), activities of daily living (red), and behavioral and psychological symptoms (black). Given that only 5 people had a Dependance Scale score of 0 or 1, these states are combined here.