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REAL-WORLD PERFORMANCE EVALUATION OF A SMARTPHONE BASED BOLUS CALCULATOR APPLICATION
Abstract
Background and Aims
Automated bolus calculators (ABCs) help PwD with calculating insulin doses. Clinical studies have consistently shown the clinical benefits of ABCs. However, ABCs differ in terms of their design and mathematical approaches but the real-world impact of such differences was never evaluated. We evaluate the real-world impact of a significant change introduced to the algorithm of an over-the-counter ABC that is integrated into a mobile health application.
Methods
We use a retrospective pretest-posttest design to evaluate changes in glycemic control and patient reported outcomes (PROs) after 3 months of using an updated ABC. We test for clinical relevant changes in mean glucose, coefficient of variability and hypoglycemic episodes calculated from self-monitored blood glucose data. Diabetes Treatment Satisfaction Questionnaires (DTSQ) are sent at device initiation (baseline) and at 3 month follow-up.
Results
Improvements in glucose control and PROs are expected as a result of the updated algorithm. At the moment of writing, baseline surveys were sent to 6872, received by 4414 (65%) and completed by 720 (17%) users out of which 50% are expected to complete the follow-up survey. Analysis is ongoing and preliminary results are expected by the end of the year.
Conclusions
We evaluate the real-world impact of a significant design change introduced to the algorithm of an over-the-counter ABC on glycemic control and treatment satisfaction. High exclusion rates are accounted for by the analysis of a comparably large population. Preliminary results are expected by the end of the year.