Accounting for differences in transfusion volume:  Are all massive transfusions created equal?
Among patients subjected to MT, those who receive relatively higher quantities of RBCs are both more likely to receive a lower plasma:RBC and are more likely to die. Any analysis concerning transfusion ratios should take the potential confounding of this heterogeneity among MT patients into account.
BV was not associated with spontaneous preterm birth, but was associated with both LBW and SGA in nulliparous women.