Despite tremendous efforts to increase the reliability of pain measures and other self-report instruments, improving or evenevaluating the reliability of change scores has been largely neglected. In this study, we investigate the ability of 2 …
**Purpose:** The number of non-responders to treatment among patients with chronic pain (CP) is high, although intensive multimodal treatment is broadly accessible. One reason is the large variability in manifestations of CP. To facilitate the …