Module 1: Gallbladder Dissection

Proficiency = 109.0262 − 0.0398 Total time − 0.0238 Tip trajectory

Variables Measured and Criterion Percentile Values
Variable	10	25	50	75	90
Total time	335.3	296	213	188.5	176.5
Tip-trajectory	475.579	370.53	319.762	237.19	204.669
Burning-in-air time	13.242	7.733	3.5	1.804	1.276
Tissue overstretched	5	4.25	2.5	1	1
Dissection-outside-target	24.8	14	8	3	3
Proficiency score	85.024	88.044	92.922	96.066	97.782
Means ± Standard Deviations for Each Variable
Variable	−1.5	−1	0	+1	+1.5
Total time	122.734	163.962	246.417	328.872	370.099
Tip-trajectory	104.294	184.53	345.003	505.476	585.712
Burning-in-air time	−2.143	0.372	5.402	10.432	12.947
Tissue overstretched	−4.531	−1.715	3.917	9.549	12.365
Dissection-outside-target	−2.752	1.652	10.462	19.271	23.675
Proficiency score	80.47	83.977	90.99	98.003	101.51