Figure 2

Response entropy/BIS-Index/state entropy at different Ramsay Sedation Scale scores. The 1,932 data points (about 660 events) are at -2 minutes (2 minutes before an event). Boxes show median, 25th and 75th percentiles; whiskers indicate the 10th and 90th percentiles. RE, response entropy; RS, Ramsay Sedation Scale; SE, state entropy.