title: Associations of objectively measured and self-reported sleep duration with carotid artery intima media thickness among police officers.
abstract: BACKGROUND
  We aimed to examine the association of objectively measured and self-reported sleep duration with carotid artery intima media thickness (IMT) among 257 police officers, a group at high risk for cardiovascular disease (CVD).
  
  
  METHODS
  Sleep duration was estimated using actigraphic data and through self-reports. The mean maximum IMT was the average of the largest 12 values scanned bilaterally from three angles of the near and far wall of the common carotid, bulb, and internal carotid artery. Linear and quadratic regression models were used to assess the association of sleep duration with IMT.
  
  
  RESULTS
  Officers who had fewer than 5 or 8 hr or more of objectively measured sleep duration had significantly higher maximum IMT values, independent of age. Self-reported sleep duration was not associated with either IMT measure.
  
  
  CONCLUSIONS
  Attainment of sufficient sleep duration may be considered as a possible strategy for atherosclerosis prevention among police officers.
authors.affiliation: Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, Morgantown, West Virginia.
authors.forename: Claudia C
authors.initials: CC
authors.lastname: Ma
authors.forename: Cecil M
authors.initials: CM
authors.lastname: Burchfiel
authors.forename: Luenda E
authors.initials: LE
authors.lastname: Charles
authors.forename: Joan M
authors.initials: JM
authors.lastname: Dorn
authors.forename: Michael E
authors.initials: ME
authors.lastname: Andrew
authors.forename: Ja Kook
authors.initials: JK
authors.lastname: Gu
authors.forename: Parveen Nedra
authors.initials: PN
authors.lastname: Joseph
authors.forename: Desta
authors.initials: D
authors.lastname: Fekedulegn
authors.forename: James E
authors.initials: JE
authors.lastname: Slaven
authors.forename: Tara A
authors.initials: TA
authors.lastname: Hartley
authors.forename: Anna
authors.initials: A
authors.lastname: Mnatsakanova
authors.forename: John M
authors.initials: JM
authors.lastname: Violanti
mesh_terms: D056044:Actigraphy; D000328:Adult; D000368:Aged; D002318:Cardiovascular Diseases / Q000000981:diagnostic imaging / Q000453:epidemiology; D002339:Carotid Arteries / Q000000981:diagnostic imaging; D002340:Carotid Artery Diseases / Q000000981:diagnostic imaging / Q000453:epidemiology*; D059168:Carotid Intima-Media Thickness / Q000706:statistics & numerical data*; D015331:Cohort Studies; D005260:Female; D006801:Humans; D016014:Linear Models; D008297:Male; D008875:Middle Aged; D009518:New York / Q000453:epidemiology; D009784:Occupational Diseases / Q000453:epidemiology; D016495:Police / Q000706:statistics & numerical data*; D012044:Regression Analysis; D012307:Risk Factors; D057566:Self Report; D012890:Sleep; D012892:Sleep Deprivation / Q000453:epidemiology*; D055815:Young Adult
keywords: actigraphy; carotid artery intima media thickness; occupational epidemiology; sleep duration
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