Author

Youngjae Yoo

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Open access Sep 2026

Sleep Duration and Health Outcomes by Sex in the KoGES Ansan Cohort: A Cross-Sectional Interaction Analysis

Objective: To test whether sex modifies the association between habitual sleep duration and health outcomes in middle-aged Korean adults.Methods: We analyzed cross-sectional data from 3,709 participants in the Ansan arm of the Korean Genome and Epidemiology Study Phase 2 (2003–2004). Sleep duration was calculated as a...

Chul-Hyun Cho, Youngjae Yoo, Heon-Jeong Lee · Chronobiology in Medicine · 0 citations

Open access Feb 2026

Investigating the mobile messenger app-based intervention delivered by a therapeutic companion agent for young adults with depressive symptoms: A proof-of-concept and quasi-experimental study

Background Despite the clinical potential of digital interventions for young adults with depression, low engagement remains a persistent challenge. A conversational therapeutic companion agent (TCA) can foster a digital therapeutic alliance to address this barrier. Objective This study aimed to develop a Wizard-of-Oz T...

Youngjae Yoo, Minuk Kim, Soyoung Kim et al. · Digital Health · 1 citation