Background: Significant insomnia symptoms can have important impacts on the health and quality of life of caregivers of persons with cognitive decline (PwCD).
Objective: To characterize the prevalence of clinically significant insomnia symptoms using the recommended community cutoff for the Insomnia Severity Index (ISI; ≥10) and identify correlates of the presence of symptoms.
Methods: Eighty PwCD caregivers were recruited from a memory and aging care clinic in an academic medical center and completed all study procedures (M = 66.05 ± 13.45 years; 93.75 % non-Hispanic White, 71.00 % spouses, 81.25 % co-dwelling with PwCD). Caregivers completed the ISI, Hospital Anxiety and Depression Scale, and Zarit Burden Interview (12-item).
Results: One-third of PwCD caregivers reported clinically significant insomnia symptoms. Caregivers reporting these symptoms were more likely to report difficulty sleeping due to stressful/anxious thoughts about the PwCD compared to caregivers without insomnia symptoms (p < .001). No group differences were detected between caregivers with and without insomnia symptoms based on reported frequency of PwCD nighttime care needs or behaviors. Caregivers with insomnia symptoms endorsed significantly higher depression symptoms, anxiety symptoms, and caregiving psychological burden (ps < 0.001).
Conclusions: PwCD stress and psychological burden, but not PwCD nighttime factors, appear to be associated with clinically significant insomnia symptoms among PwCD caregivers. Existing evidenced-based treatments for insomnia, such as cognitive behavioral therapy for insomnia, may be effective in this cohort.
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