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Cardiovascular events in insomnia patients with post-traumatic stress disorder.
Sleep Medicine 2022 August 10
BACKGROUND: Both post-traumatic stress disorder (PTSD) and insomnia are independently associated with a greater risk of cardiovascular mortality. The objective of this study is to determine whether PTSD plus insomnia is associated with a higher risk of major adverse cardiovascular events (MACEs) than either condition alone in a large cohort of veterans.
METHODS: We conducted a retrospective analysis of the national Veterans Health Administration (VHA) electronic medical records covering veterans 18 years or older with the diagnosis of PTSD, insomnia, or both from January 1, 2015, to December 31, 2020. MACE was defined as new-onset myocardial infarction (MI), transient ischemic attack (TIA) or stroke, based on ICD-9 and ICD-10 diagnosis codes from inpatient or outpatient encounters.
RESULTS: A total of 19,080 veterans, 1840 with PTSD plus insomnia and 17,240 with either PTSD or insomnia, were included in the analysis. Baseline mean (SD) age was 46.3 (11.5) years. During median follow-up of 3.9 (interquartile range, 2.4-5.1) years, 206 (1%) veterans developed incident MACE. Cumulative incidence for MI, TIA and/or stroke was larger in veterans with PTSD plus insomnia compared to PTSD and insomnia alone (p=0.008). In a Cox proportional hazards model, PTSD plus insomnia was significantly associated with greater risk of developing MACEs (hazard ratio [HR], 1.44; 95% CI, 1.38-1.50, p=0.01) than either condition after adjusting for multiple covariates including age, gender, smoking, hypertension, depression, and burden of comorbidities.
CONCLUSIONS: This cohort study found that PTSD plus insomnia is a risk factor for MACEs of greater magnitude than PTSD- or insomnia-alone.
METHODS: We conducted a retrospective analysis of the national Veterans Health Administration (VHA) electronic medical records covering veterans 18 years or older with the diagnosis of PTSD, insomnia, or both from January 1, 2015, to December 31, 2020. MACE was defined as new-onset myocardial infarction (MI), transient ischemic attack (TIA) or stroke, based on ICD-9 and ICD-10 diagnosis codes from inpatient or outpatient encounters.
RESULTS: A total of 19,080 veterans, 1840 with PTSD plus insomnia and 17,240 with either PTSD or insomnia, were included in the analysis. Baseline mean (SD) age was 46.3 (11.5) years. During median follow-up of 3.9 (interquartile range, 2.4-5.1) years, 206 (1%) veterans developed incident MACE. Cumulative incidence for MI, TIA and/or stroke was larger in veterans with PTSD plus insomnia compared to PTSD and insomnia alone (p=0.008). In a Cox proportional hazards model, PTSD plus insomnia was significantly associated with greater risk of developing MACEs (hazard ratio [HR], 1.44; 95% CI, 1.38-1.50, p=0.01) than either condition after adjusting for multiple covariates including age, gender, smoking, hypertension, depression, and burden of comorbidities.
CONCLUSIONS: This cohort study found that PTSD plus insomnia is a risk factor for MACEs of greater magnitude than PTSD- or insomnia-alone.
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