Figure 1

The upper panel shows the relationship between the latent depression ( θ ) estimate and the number of administered items for stopping rule 'SE( θ ) < 0.3' (blue dots represent respondents). The black curve represents test information as a function of θ. The lower panel shows the kernel density estimates of the distribution of θ in the group with (dark blue line) and without (light blue line) a depression diagnosis according to the MINI.