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. 2023 Jun 20;201(2):151–159. doi: 10.1007/s10549-023-07002-1

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Fig. 2 — Invasive Disease-free Survival (iDFS) from the start of adjuvant ET. A. Overall population; B. By number of positive axillary lymph nodes (1–3 N + and ≥ 4 N +); C. By Ki67 levels (< 20 and ≥ 20%). Kaplan–Meier curves for iDFS were represented for: (A) overall population, the shadow shows the 95% confidence intervals, the 2- and 4- years iDFS in the overall population were 90.5 and 79.6%, respectively; (B) by number of positive axillary lymph nodes (1–3 N + and ≥ 4 N +); (C) by Ki67 levels (< 20 and ≥ 20%)