Fig. 1

Serum insulin concentrations during oral glucose test (OGT), n = 56. Model based clustering algorithm detected an intrinsic structure to the data and grouped individuals based on their similarities in all insulin measurements in an unsupervised manner. This figure shows the two clusters detected by the algorithm (cluster 1—dark blue; cluster 2—light blue). The calculated limit between both clusters at 120 min was 105 µLU/mL (red lines)