Decision Aids for Tamoxifen Treatment in Breast Cancer Patients

Utilization of Decision Aids for Tamoxifen Treatment in Breast Cancer Patients: A Randomized Controlled Trial.

This is an educational intervention study for breast cancer patients who undergo tamoxifen treatment. The purpose of the study is to assess the impact of decision aids (DA) on the patients' decision-making process, compliance on drug, and knowledge regarding tamoxifen treatment. Patients will randomly assign to DA group or conventional group. Both groups will have baseline questionnaire surveys before starting tamoxifen treatment, and 4 weeks later follow-up questionnaire surveys.

Inclusion Criteria:

• Breast cancer patients who are recommended to undergo tamoxifen treatment in National Cancer Center, Korea
• - Age at least 18 years and more

Exclusion Criteria:

• Age under 18 years
• Inability to read or speak Korean
• Disagree to provide a written informed consent