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Kaplan Meier estimates for the black, white breast cancer survival disparity, separately for ER/PR positive and ER/PR negative breast cancer patients. Panel A: There were 39 breast cancer deaths among 482 ER/PR positive patients; the p-value (log rank test) for the black-white disparity < 0.0001. Panel B: There were 25 breast cancer deaths among 120 ER/PR negative patients; the p-value (log rank test) for the black-white disparity = 0.89.
