TABLE 6.

Confusion matrices for classification of surgical expertise levels for blunt dissection (A), retraction (B), cold dissection (C), and burn dissection (D) subtasks into 3 levels of inexperienced, competent, and experienced

True skill	Inexperienced	93	5	3	True skill	Inexperienced	94	6	0
	competent	2	98	0		competent	1	98	1
	experienced	1	13	86		experienced	0	4	96
		Inexperienced	competent	experienced			Inexperienced	Competent	experienced
		Predicted skill					Predicted skill
	A)					B)
True skill	Inexperienced	88	12	0	True skill	Inexperienced	98	2	0
	competent	1	98	1		competent	1	95	4
	experienced	0	5	95		experienced	1	3	96
		Inexperienced	competent	experienced			Inexperienced	competent	Experienced
		Predicted skill					Predicted skill
	C)					D)