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2.2.4. Basis for Setting Sample Size

WY Wenjie Yang
WH Wenyan Hu
NM Nobuaki Morita
YO Yasukazu Ogai
TS Tamaki Saito
YW Yan Wei
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We performed a preliminary analysis using G*Power 3.1.9.7 software (Kiel University, Kiel, Germany), taking into account the two-way analysis of variance with correspondence. Effect size f = 0.25 (Medium); Significance level = 0.05; Power (1−β) = 0.80. Under these conditions, the sample size was calculated to require a total of at least 28 participants (14 each in the intervention and control groups). The study was set up with a total size of 44 participants to account for dropouts in follow-up.

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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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