. 2020 Sep 29;22(9):e20283. doi: 10.2196/20283
©Gideon Meyerowitz-Katz, Sumathy Ravi, Leonard Arnolda, Xiaoqi Feng, Glen Maberly, Thomas Astell-Burt. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 29.09.2020.
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Figure 2.
Meta-analysis of attrition rates in app-based intervention studies for chronic disease. ES: effect size.