Fig. 2.

Effect of daridorexant on Insomnia Daytime Symptoms and Impacts Questionnaire (IDSIQ) total scores and domain scores by age group. Weekly mean change from baseline in a IDSIQ total score, b IDSIQ sleepiness domain score, c IDSIQ mood domain score and d IDSIQ alert/cognition domain score in younger adults aged < 65 years and older adults aged ≥ 65 years administered daridorexant 25 mg, daridorexant 50 mg and placebo. Lower IDSIQ scores indicate better patient-perceived daytime functioning