Fig. 2: Daytime impairment ontology.

A schematic representation of the validated enriched ontology highlighting the relationship between the daytime impairment symptoms and the domains colored in purple. Notably, symptoms linked with the physical domain are visually highlighted in light blue, serving to underscore their considerable overlap with the other domains. The cognition domain exhibits the largest array of associated symptoms, followed closely by the physical domain. Grey circles: DiSMOL synonym from the Cognition or Emotional domain; Purple circles: Domain names; Light blue circles: DiSMOL synonym from the Physical domain