Results
We included 50 patients in whom we used 105 sensors. Five patients from whom we could
not collect the predefined minimum number of four consecutive comparative blood draws
were excluded from the point accuracy analysis. Therefore, we had 929 comparative samples
from 100 sensors in 45 patients (11 (7 to 28) samples per patient) during 4,639 hours (46 (27
to 134) hours per patient and 46 (21 to 69) hours per sensor) for the accuracy analysis. Point
accuracy did not meet the ISO14971 standard for insulin dosing accuracy, but improved with
increasing numbers of calibrations, and was better in patients who did not have a history of
diabetes. Out of 105 sensors, 60 were removed prematurely for a variety of reasons. The
device start–up time was 49 (43 to 58) minutes. The number of skips in data acquisition was
low, resulting in availability of real–time data during 95 (89 to 98) % of the connection time
per sensor.