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Article

Odds Ratio Product as a Biological Marker of Phenotypes of Insomnia.

Journal of sleep research - 1 Apr 2026

Lambing Kari, Guadagni Veronica, Gerardy Bethany, Bender Amy, Younes Magdy, Bastien Célyne H

Abstract excerpt

The study investigated differences in objective markers of sleep depth and identified phenotypes of insomnia. Participants were screened with the Insomnia-Severity-Index and clinical interviews and assigned to control (n = 50) or insomnia (n = 69) groups. They completed three nights of in-laboratory overnight polysomnography. We measured the Odds Ratio Product (ORP), a continuous measure of sleep depth (0 = deep...

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PMID: 40814939
DOI: 10.1111/jsr.70169

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GSC
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