To evaluate the accuracy of the Flash Glucose Monitoring system (FGM), Abbot FreeStyle Libre, used today in clinical practice in Sweden in estimating plasma glucose levels. Data will be collected in ambulatory patients with type 1 diabetes to determine safety, accuracy, and reliability.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
56
NU-Hospital Group
Uddevalla, Sweden
Mean Absolute Relative Difference (MARD)
Mean absolute relative difference (MARD) of all estimated capillary glucose values registered during the whole study period of the Freestyle Libre system compared to the capillary reference blood glucose measured with HemoCue.
Time frame: the whole study period, day 1-14
Mean absolute Difference (MAD)
Mean absolute difference(MAD) of all estimated capillary glucose values registered during the whole study period of the Freestyle Libre System compared to the capillary reference blood glucose measured with HemoCue
Time frame: the whole study period, day 1-14
Pearson Correlation Coefficient
Pearson correlation coefficient (all values registered during the whole study period)between Freestyle Libre System compared to the capillary reference blood glucose measured with HemoCue
Time frame: the whole study period, day 1-14
Mean absolute relative difference (MARD)
The MARD registered during day 1-7 and day 8-14 separately of the Freestyle Libre system compared to the capillary reference blood glucose measured with HemoCue
Time frame: the whole study period, day 1-14
Mean absolute difference MAD
The MAD registered during day 1-7 and day 8-14 separately of the Freestyle Libre system compared to the capillary reference blood glucose measured with HemoCue
Time frame: the whole study period, day 1-14
Pearson Correlation
The Pearson Correlation (data registered during day 1-7 and day 8-14 separately) between Freestyle Libre system compared to the capillary reference blood glucose measured with HemoCue
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Time frame: the whole study period, day 1-14
Mean absolute relative difference (MARD)
The MARD,(for data registered inte the following specified glucose ranges: \< 4mmol/l, 4-10mmol/l and \>10mmol/l) durin the whole study period of the Freestyle Libre system compared to the capillary reference blood glucose measured the HemoCue
Time frame: the whole study period, day 1-14
Mean absolute difference (MAD)
The MAD,(for data registered inte the following specified glucose ranges: \< 4mmol/l, 4-10mmol/l and \>10mmol/l) durin the whole study period of the Freestyle Libre system compared to the capillary reference blood glucose measured the HemoCue
Time frame: the whole study period, day 1-14
Pearson Correlation
The Pearson Correlation (for data registered inte the following specified glucose ranges: \< 4mmol/l, 4-10mmol/l and \>10mmol/l) between Freestyle Libre system compared to the capillary reference blood glucose measured with HemoCue
Time frame: the whole study period, day 1-14
questionnaire
The evaluation of the Freestyle Libre system from a questionnaires rated on a VAS-scale (Visual analogue scale), lowest value (0) equaling to Not true at all and highest value (10) equaling to Completely true
Time frame: the whole study period, day 1-14