M J Butler1, T M Spruill1, D A Johnson2, S Redline3, M Sims4, B C Jenkins5, J N Booth6, S J Thomas6, M Abdalla7, E C O'Brien8, R J Mentz8, G Ogedegbe1, N J Williams9. 1. NYU Grossman School of Medicine School of Medicine, New York, NY, USA. 2. Rollins School of Public Health, Emory University, Atlanta, GA, USA; Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA. 3. Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA; Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA. 4. University of Mississippi Medical Center, Jackson, MS, USA. 5. Jackson State University School of Public Health, Jackson, MS, USA. 6. University of Alabama at Birmingham, CTI Clinical Trials and Consulting Services, Inc., Covington, KY, Birmingham, AL, USA. 7. Columbia University Medical Center, New York, NY, USA. 8. Duke University School of Medicine, Durham, NC, USA. 9. NYU Grossman School of Medicine School of Medicine, New York, NY, USA. Electronic address: natasha.williams2@nyulangone.org.
Abstract
BACKGROUND: Suboptimal sleep, including insufficient/long sleep duration and poor sleep quality, is a risk factor for cardiovascular disease (CVD) common but there is little information among African Americans, a group with a disproportionate CVD burden. The current study examined the association between suboptimal sleep and incident CVD among African Americans. METHODS: This study included 4,522 African Americans without CVD at baseline (2000-2004) of the Jackson Heart Study (JHS). Self-reported sleep duration was defined as very short (<6 h/night), short (6 h/night), recommended (7-8 h/night), and long (≥9 h/night). Participants' self-reported sleep quality was defined as "high" and "low" quality. Suboptimal sleep was defined by low quality sleep and/or insufficient/long sleep duration. Incident CVD was a composite of incident coronary heart disease and stroke. Associations between suboptimal sleep and incident CVD were examined using Cox proportional hazards models over 15 follow-up years with adjustment for predictors of CVD risk and obstructive sleep apnea. RESULTS: Sample mean age was 54 years (SD = 13), 64% female and 66% reported suboptimal sleep. Suboptimal sleep was not associated with incident CVD after covariate adjustment [HR(95% CI) = 1.18(0.97-1.46)]. Long [HR(95%CI) = 1.32(1.02-1.70)] and very short [HR(95% CI) = 1.56(1.06-2.30)] sleep duration were associated with incident CVD relative to recommended sleep duration. Low quality sleep was not associated with incident CVD (p = 0.413). CONCLUSIONS: Long and very short self-reported sleep duration but not self-reported sleep quality were associated with increased hazard of incident CVD.
BACKGROUND: Suboptimal sleep, including insufficient/long sleep duration and poor sleep quality, is a risk factor for cardiovascular disease (CVD) common but there is little information among African Americans, a group with a disproportionate CVD burden. The current study examined the association between suboptimal sleep and incident CVD among African Americans. METHODS: This study included 4,522 African Americans without CVD at baseline (2000-2004) of the Jackson Heart Study (JHS). Self-reported sleep duration was defined as very short (<6 h/night), short (6 h/night), recommended (7-8 h/night), and long (≥9 h/night). Participants' self-reported sleep quality was defined as "high" and "low" quality. Suboptimal sleep was defined by low quality sleep and/or insufficient/long sleep duration. Incident CVD was a composite of incident coronary heart disease and stroke. Associations between suboptimal sleep and incident CVD were examined using Cox proportional hazards models over 15 follow-up years with adjustment for predictors of CVD risk and obstructive sleep apnea. RESULTS: Sample mean age was 54 years (SD = 13), 64% female and 66% reported suboptimal sleep. Suboptimal sleep was not associated with incident CVD after covariate adjustment [HR(95% CI) = 1.18(0.97-1.46)]. Long [HR(95%CI) = 1.32(1.02-1.70)] and very short [HR(95% CI) = 1.56(1.06-2.30)] sleep duration were associated with incident CVD relative to recommended sleep duration. Low quality sleep was not associated with incident CVD (p = 0.413). CONCLUSIONS: Long and very short self-reported sleep duration but not self-reported sleep quality were associated with increased hazard of incident CVD.
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