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.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Masking
SINGLE
Enrollment
360
Decision aids (tamoxifen-related educational materials in brochure or mobile app)
Change in Knowledge of Tamoxifen Scale
Time frame: baseline, 4weeks later
Decisional Conflict Scale
Assess the decisional conflict regarding tamoxifen treatment
Time frame: baseline, 4weeks later
Satisfaction with Decision Questionnaire
Assess the satisfaction with decision to undergo tamoxifen treatment
Time frame: baseline, 4weeks later
EORTC QLQ-C30 Questionnaire
Assess the quality of life before and during tamoxfen treatment
Time frame: baseline, 4weeks later
EQ-5D Questionnaire
Assess the quality of life before and during tamoxfen treatment
Time frame: baseline, 4weeks later
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