Suboptimal sleep and incident cardiovascular disease among African Americans in the Jackson Heart Study (JHS)

M. J. Butler, T. M. Spruill, D. A. Johnson, S. Redline, M. Sims, B. C. Jenkins, J. N. Booth, S. J. Thomas, M. Abdalla, E. C. O'Brien, R. J. Mentz, G. Ogedegbe, N. J. Williams

Research output: Contribution to journalArticlepeer-review

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.

Original languageEnglish (US)
Pages (from-to)89-97
Number of pages9
JournalSleep Medicine
Volume76
DOIs
StatePublished - Dec 2020

Keywords

  • African Americans
  • Cardiovascular disease
  • Jackson Heart Study
  • Sleep duration
  • Sleep quality

ASJC Scopus subject areas

  • Medicine(all)

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