4. What amount of change in the scores represent an important difference?

Answer: In using the COPM as an outcome measure, the change scores from assessment to re-assessment are the most meaningful. The research evidence to date suggests that a change of 2 or more points represents a clinically important change. However, it is important to remember that the COPM is an individualized measure, so the meaning of the change scores may vary by individual. In using the COPM in research, it is best to set a change level, a priori.