After program implementation, health practitioners move to the Evaluation stage, which usually includes program impact and outcome evaluations. The corresponding design thinking stage is the Test mode, in which practitioners solicit feedback about the prototypes they created previously to refine prototypes, learn more about their target population, and refine their problem statement. The end goal of Testing is to get closer to an ideal solution. Results from the Test mode often prompt practitioners to go back to the Empathize, Define, Ideate, and Prototype modes to refine solutions, which is distinct from traditional public health models.