Published on in Vol 11 (2023)
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/45414, first published
.
![Usage and Daily Attrition of a Smartphone-Based Health Behavior Intervention: Randomized Controlled Trial Usage and Daily Attrition of a Smartphone-Based Health Behavior Intervention: Randomized Controlled Trial](https://asset.jmir.pub/assets/0666c3b49751dd184ba44844df4341c3.png 480w,https://asset.jmir.pub/assets/0666c3b49751dd184ba44844df4341c3.png 960w,https://asset.jmir.pub/assets/0666c3b49751dd184ba44844df4341c3.png 1920w,https://asset.jmir.pub/assets/0666c3b49751dd184ba44844df4341c3.png 2500w)
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