Figure 2.

Illustration of the DOOR method using (A) only categorical outcomes and (B) incorporating continuous outcomes. In (A) “Partial credit” can be used when the perceived distance between outcomes is not uniform. These credit values can be identified based on research with various stakeholders or identified at the beginning of the study by each participant to personalize the DOOR outcome. Group comparisons can be performed with respect to the partial credit scores (A) or the ranks (B) using an appropriate statistical test. Note that the examples used here are hypothetical (i.e., not informed by stakeholders) and serve only to illustrate the way in which the method is used.