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The relationship of sleep duration with ethnicity and chronic disease in a Canadian general population cohort

journal contribution
posted on 18.03.2021, 03:05 by Mandeep Singh, Kelly A Hall, Amy ReynoldsAmy Reynolds, Lyle J Palmer, Sutapa Mukherjee
Study Objectives: Sleep duration is an important marker of sleep quality and overall sleep health. Both too little and too much sleep are associated with poorer health outcomes. We hypothesized that ethnicity-specific differences in sleep duration exist. Methods: This cross-sectional study utilized questionnaire data from the Ontario Health Study (OHS), a multi-ethnic population-based cohort of Canadian adult residents aged 18 to 99 years, who provided medical, socio-demographic, and sleep information. Generalised linear models were used to investigate the association of sleep duration with ethnicity. Results: The study sample consisted of 143,307 adults (60.4% women). The sample was multi-ethnic, including self-identified Aboriginal, Arab, Black, Chinese, Filipino, Hispanic, Japanese, Korean, Mixed (>1 ethnicity), South Asian, South-East Asian, West Asian, and White ethnicities. Univariate analyses found that mean sleep duration compared to the White reference group (7.34 hours) was shorter in the Filipino (6.93 hours, 25 min less), Black (6.96 hours, 23 min less), Japanese (7.02 hours, 19 min less), Chinese (7.23 hours, 7 min less), and Mixed (7.27 hours, 4 min less) groups (all P<0.001). Mean sleep duration was shorter in men (7.25 hours) compared to women (7.37 hours) in the cohort as a whole (P<0.001), and in all ethnic groups (P<0.001). Multivariate analyses, adjusted for a wide range of potential risk factors, and analysis of sleep duration as a categorical variable (“short”, “average”, and “long” sleepers) confirmed these relationships. Both sleep duration and ethnicity were independent significant predictors of a range of physician-diagnosed morbidities including diabetes, stroke, and depression. Conclusion: Important differences exist in sleep duration between ethnic groups and may contribute to observed health disparities. Our results highlight the need for ethnicity-specific targeted education on the importance of prioritizing sleep for good health, and the need to account appropriately for ethnicity in future epidemiological, clinical, and translational research into sleep and related conditions.

Funding

Category 3 - Industry and Other Research Income

History

Volume

12

Start Page

239

End Page

251

Number of Pages

13

eISSN

1179-1608

ISSN

1179-1608

Location

New Zealand

Publisher

Dove Medical Press

Publisher License

CC BY-NC

Additional Rights

CC BY-NC 3.0

Language

eng

Peer Reviewed

Yes

Open Access

Yes

Acceptance Date

02/04/2020

External Author Affiliations

University of Adelaide; Southern Adelaide Local Health Network

Author Research Institute

Appleton Institute

Era Eligible

Yes

Medium

Electronic-eCollection

Journal

Nature and Science of Sleep