Table 2.

Power study to determine number of patients needed in AIS group.

	TXA		Amicar		Control
	Blood loss	Standard Deviation	Blood Loss	Standard Deviation	Blood Loss	Standard Deviation	Sample Size Needed
Intra-op blood loss	1072 mL	+/- 425 mL	-	-	1420 mL	+/- 644 mL	58
Intra-op blood loss	1072 mL	+/- 425 mL	893 mL	+/- 220 mL	-	-	80
Total blood transfused	1253 mL	+/- 884 mL	-	-	1784 mL	+/- 733 mL	55
Total units transferred	-	-	1.2 U	+/- 1.1 U	2.2 U	+/- 1.3 U	34