Figure 4From: 30-day in-hospital mortality after acute myocardial infarction in Tuscany (Italy): An observational study using hospital discharge data Funnel plot for unadjusted 30-day in-hospital mortality rate with 95% and 99.8% control limits (NSTEMI). Red line: overall 30-day in-hospital mortality rate; green lines: 95% control limits; grey lines: 99.8% control limits; labelled data points: hospitals falling above the upper 95% limit or below the lower 95% limit.Back to article page