Fig. 2
From: Development and evaluation of CARIES-QC: a caries-specific measure of quality of life for children
Targeting of CARIES-QC. The upper section of the graph shows the distribution of participants and the lower part the distributions of thresholds (category transitions) of the items. The x-axes display the location (severity of impact) of the participants and the item location (difficulty) of the item thresholds. The y-axes show the frequency of item thresholds and participants