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. 2019 Feb 14;7(2):e10988. doi: 10.2196/10988

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©Laura D Ellingson, Jeni E Lansing, Kathryn J DeShaw, Karissa L Peyer, Yang Bai, Maria Perez, L Alison Phillips, Gregory J Welk. Originally published in JMIR Mhealth and Uhealth (http://mhealth.jmir.org), 14.02.2019.

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 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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Fitbit wear time in relation to habit automaticity over the intervention period by the group (FB+, FB). High versus low habit was defined using a median split of the data. FB+: Fitbit with motivational interviewing; FB: Fitbit alone.