Table 2. Preliminary Instrument Use Patterns and Corresponding Variance of Blood Loss.

Instrument use pattern feature	Effect size	Variance of blood loss	P value
Time to hemostasis	2.9	49.84	.001
Frames with
Grasper	–679.5	6.24	.001
Cottonoid	–684.6	6.18	.001
Muscle	–466.2	1.99	.02
Suction	–403.5	1.71	.03
String	–259.3	1.37	.05