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. 2023 Aug 2;7(1):e179. doi: 10.1017/cts.2023.582

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© The Author(s) 2023

This is an Open Access article, distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives licence (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided that no alterations are made and the original article is properly cited. The written permission of Cambridge University Press must be obtained prior to any commercial use and/or adaptation of the article.

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Figure 3. — Proposed participant adherence monitoring diagram based on the protocol from the Apple Heart Study example. Each box represents a count of the number of participants who completed the given step in the protocol.