Dexcom G5 MOBILE User Manual page 314

Hyperglycemia Alert Rate
The Alert Rate shows how often the alert is right or wrong. The True Alert Rate is the % of time
the device alarmed when the blood glucose level was at or above the alert setting within 15 or 30
minutes before or after the device alarmed. The False Alert Rate is the % of time the device alarmed
when the blood glucose level was below the alert setting within 15 or 30 minutes before or after the
device alarmed.
For example, if you set the High Glucose alert to 200 mg/dL and your alarm sounds, how often can you
Software 505 Adult
expect your blood sugar to actually be high? In the Study (Table 6-A), when your
alarm sounds, you can expect your blood sugar to be at or above 200 mg/dL approximately 96% of the
time and not be above 200 mg/dL approximately 4% of the time within the 15 minute period before or
after your alarm sounds.
Hyperglycemia Detection Rate
The Detection Rate shows how often the device recognizes and alerts you to an episode of
hyperglycemia or how often it misses such an event. The Hyperglycemia Detection Rate is the % of
time the blood glucose level was at or above the alert setting and the device alarmed within 15 or
30 minutes before or after the blood glucose was at or above the alert settings. The Hyperglycemia
Missed Detection Rate is the % of time the blood glucose was at or above the alert setting, but the
device did not alarm within 15 or 30 minutes before or after the blood glucose was at or above the
alert setting.
For example, if you set your High Glucose alert to 200 mg/dL, how often will your alarm alert you if
your blood glucose goes at or above 200 mg/dL? In the Software 505 Adult Study (Table 6-A), when
your blood sugar goes above 200 mg/dL, you can expect your alarm to sound 98% of the time and not
to sound approximately 2% of time within the 15 minute period before or after your blood sugar goes
above 200 mg/dL.
Dexcom G5 Mobile System User Guide
Technical Information
312