Table 1.

Interview guide

Capability	• What is your understanding of the potential bone health issues associated with ET for BC? • What measures have you taken to prevent or address these bone health issues? From which sources did you obtain this information?
Opportunity	• What are the main difficulties or obstacles you encounter when learning about and practicing bone health management? • What relevant support has your family, friends, or healthcare team provided? In what specific ways?
Motivation	• How confident are you in your ability to adhere to these bone-protecting measures (such as long-term calcium supplementation and regular exercise)? Why? • How confident are you in maintaining these bone-protecting measures (such as long-term calcium supplementation and regular exercise)? Among the many demands of your daily life (such as medical treatment, family commitments, and work), how important do you consider adhering to bone health management? How much effort are you willing to dedicate to it?
Behavior	• During your treatment, did you experience any bone pain or fractures? How were these issues addressed at the time? • How is your intake of calcium and vitamin D-rich foods (such as milk and fish) in your diet? Could you provide some examples? • How often do you exercise? What types of exercise do you engage in, and how frequently?