Fig. 1: Overview of participant selection.
From: Hyposmia in Parkinson’s disease; exploring selective odour loss
PPMI Parkinson’s Progression Markers Initiative, PD Parkinson’s disease, UPSIT University of Pennsylvania Smell Identification Test. *Acting out dreams, punching, kicking, yelling or falling out of bed; **UPSIT score ≥15th percentile38.
