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. 2023 Mar 23;15(4):1042. doi: 10.3390/pharmaceutics15041042

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© 2023 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Willingness (no, if necessary, yes) of old participants to swallow the respective tablet once a day for one week (upper panel) or over several months (lower panel), dependent on tablet’s swallowability rating. Only the answers from participants who were able to swallow the tablets were considered here (corresponding to 100% value). Thus, zero to three evaluations from each participant are included. Percentages to the right of the bars are representing the fractions of the different willingness levels, if all deglutition attempts of each swallowability rating (well or moderately swallowable) are set to 100%.