Figure 1
From: Internal consistency reliability is a poor predictor of responsiveness
Relationship between internal consistency reliability and responsiveness, all studies Relationship between Cronbach's alpha and standardised response mean for 79 domains or total scores of health-related quality of life instruments and symptoms scales. The data come from four studies including 333 patients with chronic obstructive pulmonary disease following a pulmonary rehabilitation and 183 patients with knee injury undergoing anterior crucial ligament reconstruction or knee arthroscopy.