Prevalence of insomnia symptoms in sleep laboratory patients with and without sleep apnea

Received 3 September 2008; received in revised form 21 December 2008; accepted 7 February 2009.

Abstract

We used the Insomnia Severity Index (ISI) to evaluate the prevalence and distribution of insomnia symptoms in 100 adult patients referred for laboratory evaluation of obstructive sleep apnea (OSA). Sixty-one percent met ISI criteria for a moderate to severe degree of insomnia symptoms. The distribution of insomnia symptoms did not differ by OSA severity.

Keywords: Insomnia, Obstructive sleep apnea, Polysomnography

a Department of Neurology, Behavioral Medicine, Wake Forest University Health Sciences, Winston-Salem, NC, USA

b Department of Psychiatry and Behavioral Medicine, Wake Forest University Health Sciences, Medical Center Blvd, Winston-Salem, NC 27157, USA

Corresponding author. Tel.: +1 336 716 2911; fax: +1 336 716 6830.

PII: S0165-1781(09)00070-5

doi:10.1016/j.psychres.2009.02.001

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