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. 2021 Jul 2;9:667821. doi: 10.3389/fpubh.2021.667821

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Copyright © 2021 Bartzik, Bentrup, Hill, Bley, von Hirschhausen, Krause, Ahaus, Dahl-Dichmann and Peifer.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Sense of humor before and after the humor intervention comparing control group (CG) and intervention group (IG); Measuring points: t₀ = Baseline; t₁ = 6 months after the humor intervention; the interaction effect (p = 0.015) indicated that sense of humor decreased from t₀ to t₁ in the control group, but remained stable in the intervention group.