Figure 1

Scatterplot showing Pearson correlation between HbA1c levels and 5-HTT BP_ND obtained with [¹¹C]DASB and PET in right hippocampus (rH) for obese (r = − 0.79, p = 0.0002) and non-obese (r = 0.06, p = 0.64). The difference of regression coefficients was significant (p = 0.002).