Dexcom SEVEN User Manual page 112

AGREEMENT
Agreement between the Seven System and blood glucose levels is characterized using
paired Seven System and YSI results. The Seven System and YSI readings were compared
by pairing the Seven System reading that fell within 2.5 to 7.5 minutes after the YSI
reading was collected.
The agreement of the Seven System to blood glucose levels was assessed by calculating
the percentage of Seven System readings that were within 20%, 30%, and greater than
40% of the YSI readings. For readings less than or equal to 80 mg/dL the difference in
mg/dL between the two glucose readings was calculated. For readings greater than 80
mg/dL the percent difference (%) from the YSI reading was calculated. The percentages
of total readings within 20 mg/dL or 20%, 30 mg/dL or 30%, or greater than 40 mg/dL or
40% were then calculated. The total number of data pairs considered in this analysis was
2,318. Results are shown in Table 1.
108 | SEVEN CONTINUOUS GLUCOSE MONITORING SYSTEM
™