An outcome is an instrument designed specifically to capture change. In the case of the COPM it has been designed specifically to capture the change in performance and satisfaction. By comparing the COPM scores on performance and satisfaction from before intervention to those after intervention, you can quantify the differences in performance and satisfaction and therefore quantify the changes that have occurred.
Additional Information: September 2020 Newsletter
Categories: Getting Started, Psychometric Properties and Scoring the COPM