Disparities in sleep characteristics by race/ethnicity in a population-based sample: Chicago Area Sleep Study

Mercedes R. Carnethon, Peter John De Chavez, Phyllis C. Zee, Kwang Youn A. Kim, Kiang Liu, Jeffrey Goldberger, Jason Ng, Kristen L. Knutson

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

Background: Prior studies report less favorable sleep characteristics among non-Whites as compared with non-Hispanic Whites. However, few population-based studies have used objective measures of sleep duration, especially in more than two racial/ethnic groups. We tested whether objectively estimated sleep duration and self-reported sleep quality varied by race and whether differences were at least partially explained by the variability in clinical, psychological, and behavioral covariates. Methods: Adults aged 35-64 years who self-identified as White, Black, Asian, or Hispanic were randomly sampled from Chicago, IL, and the surrounding suburbs. Our analytic sample included adults who had an apnea-hypopnea index <15 after one night of screening and who completed seven nights of wrist actigraphy for determination of sleep duration, sleep percentage, minutes of wake after sleep onset, and sleep fragmentation (n = 495). Daytime sleepiness was estimated using the Epworth Sleepiness Scale (ESS), and sleep quality was estimated from the Pittsburgh Sleep Quality Index (PSQI). Results: Following statistical adjustment for age, gender, education, work schedule (ie, day vs. night shift), smoking status, depressive symptoms, body mass index (BMI), hypertension, and diabetes, sleep duration (minutes) was significantly (all p < 0.01) shorter in Black (mean = 399.5), Hispanic (mean = 411.7), and Asian (mean = 409.6) participants than in White participants (mean = 447.4). All remaining sleep characteristics were significantly less favorable among Black participants as compared with White participants. Asian participants also reported significantly more daytime sleepiness than did White participants. Conclusions: Differences in sleep characteristics by race/ethnicity are apparent in a sample of adults with a low probability of sleep apnea and following adjustment for known confounders.

Original languageEnglish (US)
Pages (from-to)50-55
Number of pages6
JournalSleep Medicine
Volume18
DOIs
StatePublished - Feb 1 2016
Externally publishedYes

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Sleep
Population
Hispanic Americans
Actigraphy
Sleep Deprivation
Sleep Apnea Syndromes
Apnea
Wrist
Ethnic Groups
Appointments and Schedules
Body Mass Index
Smoking
Depression
Psychology
Hypertension
Education

Keywords

  • Disparities
  • Epidemiologic studies
  • Sleep duration

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Disparities in sleep characteristics by race/ethnicity in a population-based sample : Chicago Area Sleep Study. / Carnethon, Mercedes R.; De Chavez, Peter John; Zee, Phyllis C.; Kim, Kwang Youn A.; Liu, Kiang; Goldberger, Jeffrey; Ng, Jason; Knutson, Kristen L.

In: Sleep Medicine, Vol. 18, 01.02.2016, p. 50-55.

Research output: Contribution to journalArticle

Carnethon, Mercedes R. ; De Chavez, Peter John ; Zee, Phyllis C. ; Kim, Kwang Youn A. ; Liu, Kiang ; Goldberger, Jeffrey ; Ng, Jason ; Knutson, Kristen L. / Disparities in sleep characteristics by race/ethnicity in a population-based sample : Chicago Area Sleep Study. In: Sleep Medicine. 2016 ; Vol. 18. pp. 50-55.
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