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Skip search results from other journals and go to results- 1 JMIR Formative Research
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An a priori power analysis using G*Power (version 3.1; Heinrich-Heine-Universität Düsseldorf) indicated that a sample size of 270 people would be sufficient to detect a medium effect size (r=0.3) with 80% power, using a linear bivariate regression with α=.05. Thus, our proposed sample size of N=347 was more than adequate for detecting an effect of the linear predictor (well-being engagement) separately based on the outcomes of PHQ, GAD-7, and PSS score changes.
JMIR Form Res 2021;5(10):e31273
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