Table 2.

Results of the four outcome measures for all operations together and for the two subgroups removal and reconstruction

		Gravity infusion	Single roller pump	Double roller pump
All operations	Median (min.–max.) bleeding episode [% of OT]	6.6 (0.0–43.6)	3.7 (0.2–46.4)	3.3 (0.0–19.3)
	Median (min.–max.) ATB [sec.]	75.0 (0.0–927.7)	65.3 (5.7–457.1)	54.8 (0.0–339.6)
	Median (min.–max.) of MCRB [sec.]	4.8 (0.0–20.3)	4.3 (0.0–9.8)	3.7 (0.0–7.5)
Subgroup removal procedures	Median (min.–max.) ATB [sec.]	230.0 (34.3–927.7)*	116.1 (31.2–457.1)*	88.2 (42.0–281.5)*
	Median (min.–max.) of MCRB [sec.]	5.4 (2.9–7.2)	4.2 (2.9–8.2)	4.3 (3.2–7.5)
Subgroup reconstruction procedures	Median (min.–max.) ATB [sec.]	6.5 (0.0–268.9)	12.3 (5.7–324.5)	4.6 (0.0–137.2)
	Median (min.–max.) of MCRB [sec.]	0.0 (0.0–7.4)	4.0 (0.0–6.6)**	0.0 (0.0–4.2)**

If no symbols are added to the values, no significant differences were present. For ‘*’, a significant difference (MWU, P < 0.05) was present between the gravity infusion and both types of roller pumps, whereas no significant difference was present between the roller pumps. For ‘**’, a significant difference (MWU, P < 0.05) was present between the single roller and the double roller pump solely. OT Operation time, ATB absolute total bleeding episode time per operation, MCRB mean clinically relevant bleeding episode time per operation