When building decision analysis models, it is important to consider the performance and sensitivity of the model results. Model performance refers to the accuracy, reliability, and robustness of the model outputs and recommendations, while model sensitivity indicates how much the outputs and recommendations change with changes in the model inputs or parameters. To ensure optimal performance and sensitivity, you should test and validate the model outputs and recommendations against historical data, expert opinions, or alternative models. Additionally, metrics such as error rates, confidence intervals, or sensitivity analysis should be used to measure and report the model performance and sensitivity. Furthermore, sources of uncertainty and variability in the model inputs and parameters need to be identified and analyzed. Finally, suitable methods and tools such as probabilistic modeling, simulation, or optimization should be used to handle and reduce uncertainty and variability in the model.