Survival Outcomes Based on Axillary Surgery in Ductal Carcinoma <i>In Situ</i>: A Nationwide Study From the Korean Breast Cancer Society.

Correlation of axillary surgery performance rate with continuous variables In the linear regression analysis of continuous variables, the axillary surgery rate in DCIS demonstrated a decreasing trend with year of surgery in BCS (−0.009; R 2 = 0.287; 95% confidence interval [CI], −0.014 – −0.004; p = 0.001), while it exhibited an increasing pattern with a large tumor size (0.017; R 2 = 0.599; 95% CI, 0.007 – 0.028; p = 0.005).

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