A bidirectional relationship between anxiety and depression, and insomnia? A prospective study in the general population

The Hospital Anxiety and Depression Scale

A. S. Zigmond, R. P. Snaith · Acta Psychiatrica Scandinavica · 1983 · 45.5K citations

The International Classification of Sleep Disorders

Robert B. Daroff · Neurology · 1991 · 5K citations

Sleep Disorders, Sleep Medicine, Sleep +10

Place of chronic insomnia in the course of depressive and anxiety disorders

Maurice M. Ohayon, Thomas Roth · Journal of Psychiatric Research · 2002 · 868 citations

Sleep Disorders, Sleep, Sleep Disorder +12

The association of insomnia with anxiety disorders and depression: Exploration of the direction of risk

Eric O. Johnson, Thomas Roth, Naomi Breslau · Journal of Psychiatric Research · 2006 · 796 citations

Sleep Disorders, Sleep, Psychological Co-morbidities +10

Characteristics of insomnia in the United States: results of the 1991 National Sleep Foundation Survey. I.

Sonia Ancoli‐Israel, Thomas Roth · PubMed · 1999 · 781 citations

Sleep Disorders, Sleep Health, National Sleep Foundation +16