Module 2: Instrument Navigation

Proficiency = 136.4479 − 36.7202 Left instrument path length −21.4565 Right instrument path length −0.012 Right instrument angular path − 0.6106 Right instrument time − 0.2756 Tissue damage − 0.1563 Maximum damage

Variables Measured and Criterion Percentile Values
Variable	10	25	50	75	90
Left instrument path length	0.06	0.65	0.72	0.77	0.81
Left instrument angle path	168.37	180.38	204.47	228.95	245.88
Left instrument time	9.20	10.13	11.11	12.76	14.86
Right instrument path length	0.58	0.62	0.70	0.74	0.81
Right instrument angle path	131.35	142.44	155.53	180.19	194.22
Right instrument time	9.74	11.39	14.11	15.53	17.32
Tissue damage	0.00	0.00	1.00	1.00	4.00
Maximum damage	0.00	0.00	0.75	1.37	5.33
Proficiency score	77.49	78.89	84.37	88.50	93.37
Means ± Standard Deviations for Each Variable
Variable	−1.5	−1	0	+1	+1.5
Left instrument path length	0.545	0.6	0.709	0.819	0.874
Left instrument angle path	132.508	151.354	189.045	226.736	245.582
Left instrument time	7.639	8.783	11.071	13.36	14.504
Right instrument path length	0.491	0.551	0.669	0.787	0.846
Right instrument angle path	102.534	120.756	157.202	193.648	211.87
Right instrument time	8.284	9.736	12.64	15.545	16.997
Tissue damage	−0.716	0.038	1.545	3.053	3.807
Maximum damage	−1.015	−0.182	1.484	3.15	3.983
Proficiency score	75.113	78.898	86.466	94.035	97.819