Statistical Analysis
We summarized physician characteristics using mean (SD) values for continuous variables and counts and percentages for categorical variables. We analyzed implementation outcomes using an intention-to-treat approach but excluded from the efficacy analysis participants who did not use the simulation. We had 2 criteria for the success of the trial: efficacy and feasibility. Our primary hypothesis was that physicians exposed to the intervention would undertriage 25% fewer patients or more on the simulation than physicians in the control group. All 