Fig. 1.
Scattergram of bispectral index values against contemporaneous end-tidal anesthetic concentration during the maintenance phase for patients with a history of intraoperative awareness with explicit recall (AWR) (red data points) and for control patients (green data points). End-tidal anesthetic concentration measurements are expressed as age-adjusted minimum alveolar concentration (aaMAC). Regression lines estimated by the mixed linear effects model are shown across the data points for patients with a history of AWR (black line) and for control patients (blue line).