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Predicted distant recurrence (DR) risk in years 5 to 10 since random assignment (start of adjuvant endocrine therapy) for ATAC (Arimidex, Tamoxifen, Alone or Combination) trial (A) overall population and (B) node-negative and node-positive patients. Solid vertical lines indicate cutoff points for risk groups. CTS5, Clinical Treatment Score post–5 years.
