Table 4: Mean Score and Standard Deviation (SD) of the Three Observed Substeps and the Aggregate of All These Steps. Beginner Intermediate Expert P-value Mean SD Mean SD Mean SD Overall B vs I B vs E I vs E PBA All steps 2.71 0.64 3.70 0.81 3.90 0.67 <0.001* 0.003* <0.001* 0.52 Pouch creaqon 2.80 0.28 3.13 0.14 3.19 0.50 0.28 0.087 0.22 0.82 BPL&GJ 3.21 0.46 4.75 0.32 4.00 0.14 <0.001* 0.002* 0.016* 0.005* AL&JJ 2.13 0.63 3.21 0.17 4.50 0.46 <0.001* 0.016* <0.001* 0.002* BOSATS All steps 2.78 0.72 3.56 0.82 4.19 0.50 <0.001* 0.022* <0.001* 0.032* Pouch creaqon 2.63 0.22 3.04 0.51 4.16 0.34 <0.001* 0.19 <0.001* 0.010* BPL&GJ 3.56 0.61 4.45 0.41 3.87 0.64 0.13 0.052 0.51 0.18 AL&JJ 2.14 0.33 3.18 0.64 4.54 0.32 <0.001* 0.029* <0.001* 0.009* OSATS All steps 1.84 0.47 2.86 0.99 3.44 0.80 <0.001* 0.004* <0.001* 0.13 Pouch creaqon 1.78 0.31 2.24 0.11 3.48 0.61 <0.001* 0.033* 0.003* 0.007* BPL&GJ 2.20 0.54 3.96 0.93 2.79 0.25 0.011* 0.017* 0.095 0.052 AL&JJ 1.55 0.35 2.39 0.52 4.05 0.93 0.001* 0.037* 0.002* 0.021* B = beginner, I = Intermediate, E = Expert. AL = alimentary limb, BOSATS = Bariatric-OSATS, BPL = Biliopancreatic Limb, GJ = gastrojejunal anastomosis, JJ = jejunojejunostomy, OSATS = Objective Structured Assessment of Technical Skill, PBA = procedure-based assessment *Significant values (P < 0.05). 90 5
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