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Yearly trends of whole brain radiation therapy (WBRT) dose-fractionations for patients with their first lifetime malignancy and brain metastasis (BM) at diagnosis. The y-axis represents the percentage of patients diagnosed with BM in a year (2010, n = 14,613; 2011, n = 14,529; 2012, n = 14,665; 2013, n = 15,347; 2014, n = 15,727; 2015, n = 15,507) treated with the modality. Linear regression model fits are plotted with 95% confidence intervals.
