Figure 2. Confrontation Naming Performance Across Biologically and Clinically Defined Groups.

Patients with Lewy body dementia (LBD) + Alzheimer disease pathology (AD) perform worse than patients with LBD − AD on the Boston Naming Test (BNT) (A), but the dementia with Lewy bodies (DLB) and Parkinson disease dementia (PDD) groups perform similarly (B). Boxplots illustrate the median, interquartile range, and range of scores for each group independently.