Module 1: Dissection

Proficiency = 111.4094 − 0.0649 Left instrument path − 0.0097 Right instrument path − 0.0286 Left instrument smoothness 0.0106 Right instrument smoothness

Variables Measured and Criterion Percentile Values
Variable	10	25	50	75	90
Total time	118.101	99.993	69.165	59.37	52.875
Left instrument path	107.904	96.62	85.22	72.22	68.876
Right instrument path	318.034	281.74	223.38	195.33	128.32
Left instrument smoothness	497.9	406	259.5	236.25	207.5
Right instrument smoothness	381.6	316	282	225	170.2
Proficiency score	84.751	90.112	93.47	94.981	98.031
Means ± Standard Deviations for Each Variable
Variable	−1.5	−1	0	+1	+1.5
Total time	33.043	48.79	80.284	111.778	127.525
Left instrument path	55.91	66.055	86.347	106.638	116.784
Right instrument path	117.488	156.129	233.41	310.691	349.332
Left instrument smoothness	133.918	194.745	316.4	438.055	498.882
Right instrument smoothness	134.885	184.22	282.889	381.558	430.893
Proficiency score	83.519	86.389	92.13	97.871	100.741