Substance Use Disorders Affecting Sleep
REM Sleep Behavior Disorder
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Updated: Jun 7, 2026

Association Between Sleep Quality and Cognitive Symptoms in Patients with Major Depressive Disorder
Published on: April 26, 2024
Ramesh Ghiassi1, Kevin Murphy, Andrew R Cummin
1Imperial College London, 5 North Charing Cross Hospital, Hammersmith, London W68RF, UK. r.ghiassi@imperial.ac.uk
A pictorial version of the Epworth Sleepiness Scale (ESS) improves understanding for patients with literacy challenges. This visual ESS shows comparable results to the traditional scale and is preferred by most patients.
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