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The Association Between Cognitive Behavioral Therapy for Insomnia and Incident Cognitive Impairment Among Older
Hana Kusumoto1, Anjali Khakharia2,3,4, Adam D Bramoweth5
1Department of Internal Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA.
Abstract:
Among older adults, chronic insomnia is a risk factor for cognitive decline. Cognitive behavioral therapy for insomnia (CBT-I) is recommended as the initial treatment. We conducted a retrospective cohort study of 84,739 Veterans, using national Veterans Health Administration data, to evaluate the association between CBT-I completion and incident cognitive impairment among older Veterans. Veterans were classified as administration of Any CBT-I versus Referral only using electronic documented notes. Incident cognitive impairment was defined by dementia-related diagnosis codes or an associated medication prescription. Among Veterans not using sedative-hypnotics, there was a decreased incidence of cognitive impairment for Veterans completing Any CBT-I compared to Referral only, RR= 0.87 (95% CI: 0.80-0.98). Yet, for Veterans taking sedative-hypnotic medications, there was an increased incidence of cognitive impairment between groups, RR= 1.18 (95% CI: 1.07-1.30). CBT-I may offer a protective effect from incident cognitive impairment; however, the presence of sedative-hypnotics reverses this trend.
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