A longitudinal study on the changes in the self-efficacy of breast cancer patients during adjuvant chemotherapy.

Aim: We aimed to investigate the changes in the self-efficacy of patients with breast cancer (BC) during adjuvant chemotherapy.

Design: A longitudinal study was conducted.

Methods: One hundred thirty patients with BC who underwent postoperative adjuvant chemotherapy at a medical centre in northern Taiwan were evaluated using self-efficacy survey tools before the first (T1), second (T2) and last (T3) cycles of adjuvant chemotherapy.