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Impact of Virtual Reality–Based Biofeedback on Sleep Quality Among Individuals With Depressive Symptoms, Anxiety Symptoms, or Both: 4-Week Randomized Controlled Study

Impact of Virtual Reality–Based Biofeedback on Sleep Quality Among Individuals With Depressive Symptoms, Anxiety Symptoms, or Both: 4-Week Randomized Controlled Study

This study used the same cohort as Cho et al (2024) and used PSQI as the primary outcome. Although the sample size calculation was originally based on MADRS, the current sample size was considered sufficient for detecting meaningful differences in PSQI with a power of 79.75% (effect size=0.1) from post-hoc power analysis.

Sisu Seong, Hyewon Kim, Yaehee Cho, Min-Ji Kim, Ka Ram Park, Jooeun Choi, Seonah Lee, Dong Jun Kim, Seog Ju Kim, Hong Jin Jeon

J Med Internet Res 2025;27:e65772