FIG. 1.

Sample tracings from a demonstrative case study of ambulatory data using the Dexcom SEVEN sensor with numerical logic algorithm (NLA) with a prediction horizon of 60 min and successive alarms required of 2: (A) events occurred and (B) events did not occur. Included are 60 h of continuous glucose monitor (CGM) data (dark circles) with fingersticks measurements (asterisks) and the hypoglycemia threshold shown in gray. The event line is shown in a box below each tracing as a dark dashed line with false-positive (FP), true-positive (TP), and hypoglycemia (Hypo) regions in steps (marked on the y-axis). True alarms are in light circles, plotted coincidentally with the CGM data and on the true-positive region on the event line. False alarms are similarly plotted on the CGM data and on the false-positive region on the event line. Color images available online at www.liebertonline.com/dia