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. 2018 Dec 20;20(12):e11093. doi: 10.2196/11093

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©Melissa C Kay, Jasmine Burroughs, Sandy Askew, Gary G Bennett, Sarah Armstrong, Dori M Steinberg. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 20.12.2018.

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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Proportion of participants with a complete tracking week as measured by a completed IVR call or SMS text message, by study week (N=48). IVR: interactive voice response; SMS: short message service.