The development of a reliable change index and cutoff score for the SCORE-15.

The Systemic Clinical Outcome and Routine Evaluation version 15 (SCORE-15) is a measure used to assess family-level change in family therapy. The SCORE-15 has been demonstrated to be a reliable and valid measure, with high clinical utility; however, the SCORE-15 lacks the ability to determine whether the change in family functioning during the course of therapy is clinically significant. This study aimed to establish a reliable change index (RCI) and clinical cutoff score so that researchers and clinicians can determine clinically significant change in family therapy.