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Nocturnal insomnia symptoms and stress-induced cognitive intrusions in risk for depression: A 2-year prospective study

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  • David A Kalmbach
  • Vivek Pillai
  • Christopher L Drake

Abstract

Nearly half of US adults endorse insomnia symptoms. Sleep problems increase risk for depression during stress, but the mechanisms are unclear. During high stress, individuals having difficulty falling or staying asleep may be vulnerable to cognitive intrusions after stressful events, given that the inability to sleep creates a period of unstructured and socially isolated time in bed. We investigated the unique and combined effects of insomnia symptoms and stress-induced cognitive intrusions on risk for incident depression. 1126 non-depressed US adults with no history of DSM-5 insomnia disorder completed 3 annual web-based surveys on sleep, stress, and depression. We examined whether nocturnal insomnia symptoms and stress-induced cognitive intrusions predicted depression 1y and 2y later. Finally, we compared depression-risk across four groups: non-perseverators with good sleep, non-perseverators with insomnia symptoms, perseverators with good sleep, and perseverators with insomnia symptoms. Insomnia symptoms (β = .10–.13, p 30 m reported greater depression than good sleeping perseverators (t = 2.09, p

Suggested Citation

  • David A Kalmbach & Vivek Pillai & Christopher L Drake, 2018. "Nocturnal insomnia symptoms and stress-induced cognitive intrusions in risk for depression: A 2-year prospective study," PLOS ONE, Public Library of Science, vol. 13(2), pages 1-13, February.
    • Handle: RePEc:plo:pone00:0192088
    DOI: 10.1371/journal.pone.0192088
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