Figure 1From: Minimal important differences and response shift in health-related quality of life; a longitudinal study in patients with multiple myeloma Observed and adjusted scores of the EORTC QLQ-C30 for MM patients deteriorated in fatigue (n = 58). The patients evaluated their fatigue in retrospect as better (less fatigue) than they did at T1. The difference between the pre-test and then-test score is the response shift effect.Back to article page