Figure 3: Composite graphs of glycemic variability (GV) during the last 100 pre-discharge 12-hour epochs. Discharge was defi ned as either ICU mortality or discharge alive from the ICU. Dashed red line represents GV for non-survivors and black solid line represents GV for survivors. Composite raw GV data are shown in (A) while composite 10-epoch moving average for GV is shown in (B). Note that the 10-epoch GV moving averages interact only once during the entire 100-epoch period (black circle). This fi nding may be pertinent to daily patient care because the GV, represented as a moving average, could serve as a clinical "barometer". GV is defi ned as the maximal– minimal glucose value for each epoch, with glucose levels expressed in mg/dL