Figure 1From: Should policy-makers and managers trust PSI? An empirical validation study of five patient safety indicators in a national health service Variation in adjusted-incidence by PSI. Each dot represents the adjusted-incidence of adverse events in a specific hospital. Incidence is computed as a mean-centred log-incidence to allow the comparison among events with different basal incidence. Legend: y axis: log-adjusted-incidence. x axis: (left to right) Mortality in Low-Mortality DRGs, Decubitus Ulcer, Catheter-related Infection, Post-operative Pulmonary Embolism or Deep-vein Thrombosis and Post-operative SepsisBack to article page