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Comparisons of estimated median blood loss and statistical significance (U test) of no vs coil (N.S.), coil vs particle-coil (P = .05), no vs particle-coil (P = .01), and no vs particle embolization (P = .01) are shown. No significant difference could be demonstrated between the two particle techniques. The table shows mean and median blood losses and the standard deviation. Additionally, the number of transfused units of packed red blood cells (300 ml each) is indicated
