Breast Cancer Research and Treatment
Oestrogen receptor testing and initiation of adjuvant endocrine therapy in women with ductal carcinoma in situ: a population-based study
Abstract Introduction Use of adjuvant endocrine therapy (ET) for ductal carcinoma in situ (DCIS) varies widely in clinical practice. We investigated oestrogen receptor (ER) testing, the initiation of ET, and the effect of ET on outcomes for DCIS in New Zealand. Methods Women with DCIS (2000–2022) were identified from the New Zealand Breast Cancer Foundation National Register and linked to the national pharmaceutical data. Logistic regression identified factors associated with ER testing, and cumulative incidence of …