Fig. 2From: Selecting interventions to improve patient-relevant outcomes in health care for aortic valve disease – the Intervention Selection ToolboxExample of a causal chain. MUST is the Malnutrition Universal Screening Tool. DSWI is deep sternum wound infection. One star indicates a small impact on outcome measures. Two stars indicate a slightly bigger (intermediate) impact on outcome measures. Three starts represent a large impact on outcome measuresBack to article page