Jee-Hyang Lee is a Senior Researcher at the Research Institute of Nursing Science, Seoul National University, where she also earned her Master’s and Doctoral degrees specializing in Adult Health Nursing. Her research program focuses on enhancing self-care behaviors and patient-reported outcomes (PROs) among individuals living with chronic conditions and multimorbidity. Dr. Lee has extensively investigated the concept of treatment burden in patients with multiple chronic conditions. Her notable contributions include the linguistic validation and psychometric testing of instruments measuring treatment burden. Building upon an integrative review conducted with Professor Kyung-Sook Lee’s research team, she has developed a novel assessment tool designed to address the limitations of existing measures (currently under review). Her work further explores the complex interplay between treatment burden, self-care, and health-related quality of life (HRQoL). For her doctoral dissertation, Dr. Lee developed an instrument to measure the complexity of self-care decision-making in patients with multimorbidity, a line of inquiry she continues to expand. Currently, she is a key researcher in a project led by Professor Kyung-Sook Lee, focused on developing a healthcare provider training program aimed at establishing shared decision-making (SDM) based self-care plans for patients with multimorbidity.