Abstract
Background and Aims
The aim of this study is to evaluate the usability of the artificial pancreas DBLG1 SYSTEM from Diabeloop based on an analysis of the number of parameters’ changes performed by the patient or its caregiver along the weeks of usage.
Methods
DBLG1 SYSTEM allows patients to modulate some parameters (n=5) to adapt system recommendations to their preferences. For each patient, we extracted the number of changes they made each week of the study (figure A).
The entire dataset [1] was composed of 24 women and 39 men wearing the DBLG1 SYSTEM during 12 weeks.
A hierarchical clustering [2] was applied on the dataset to separate all patients according to the number of changes they made per week, which resulted in 4 clusters. We focused on the biggest cluster: 34 patients representing the main trend in parameters changing (figure B)
Results
Patients changed 7 (± 4.4) parameters on average during the first week and only 2 (± 2.4) parameters in the last week of the clinical study. We observed that less than 3 changes per week were made after 3 weeks (figure A).
After clustering, we isolated 54% of patients that changed on average less than 1 parameter per week after 5 weeks (figure B). After week 5, they stayed below 1 on average : 0,80 (± 1,05) change per week.
Conclusions
We may then consider that the DBLG1 SYSTEM is easy to use, since parameters tuning is mostly performed during the first 5 weeks.