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. 2016 Jul 12;5(7):e003731. doi: 10.1161/JAHA.116.003731

Figure 1.

Figure 1

Box and whisker plots of the distributions of hospital‐specific patient volumes and the number of adverse events for which patients were at risk. The length of the box represents the interquartile range (IQR), the horizontal line in the box interior represents the median, the whiskers represent the 1.5 IQR of the 25th quartile or 1.5 IQR of the 75th quartile, and the dots represent outliers. The median (IQR) numbers of patients per hospital for the mortality and unplanned readmission measures were 149 (226) and 158 (262); the median (IQR) number of adverse events for which patients were at risk was 59 (29).