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Transfusion requirements and mortality in patients classified according to either admission base deficit (BD) or the ATLS classification of hypovolemic shock. (a) Percentage of patients with at least one blood product. (b) Percentage of patients with massive transfusion, defined as at least 10 blood units until intensive care unit (ICU) admission. (c) Mortality (percentage). ***P < 0.001; n = 16,305. ATLS, Advanced Trauma Life Support; n.s., not significant.
