Correlates of short and long sleep duration: a cross-cultural comparison between the United Kingdom and the United States: the Whitehall II Study and the Western New York Health Study
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The authors examined sociodemographic, lifestyle, and comorbidity factors that could confound or mediate U-shaped associations between sleep duration and health in 6,472 United Kingdom adults from the Whitehall II Study (1997-1999) and 3,027 US adults from the Western New York Health Study (1996-2001). Cross-sectional associations between short (<6 hours) and long (>8 hours) durations of sleep across several correlates were calculated as multivariable odds ratios. For short sleep duration, there were significant, consistent associations in both samples for unmarried status (United Kingdom: adjusted odds ratio (AOR) = 1.49, 95% confidence interval (CI): 1.15, 1.94; United States: AOR = 1.49, 95% CI: 1.10, 2.02), body mass index (AORs were 1.04 (95% CI: 1.01, 1.07) and 1.02 (95% CI: 1.00, 1.05)), and Short Form-36 physical (AORs were 0.96 (95% CI: 0.95, 0.98) and 0.97 (95% CI: 0.96, 0.98)) and mental (AORs were 0.95 (95% CI: 0.94, 0.96) and 0.98 (95% CI: 0.96, 0.99)) scores. For long sleep duration, there were fewer significant associations: age among men (AORs were 1.08 (95% CI: 1.01, 1.14) and 1.05 (95% CI: 1.02, 1.08)), low physical activity (AORs were 1.75 (95% CI: 0.97, 3.14) and 1.60 (95% CI: 1.09, 2.34)), and Short Form-36 physical score (AORs were 0.96 (95% CI: 0.93, 0.99) and 0.97 (95% CI: 0.95, 0.99)). Being unmarried, being overweight, and having poor general health are associated with short sleep and may contribute to observed disease associations. Long sleep may represent an epiphenomenon of comorbidity.
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Depressive symptoms, low socioeconomic status, low level of physical activity, unemployment, undiagnosed health conditions, poor general health, and cancer-related fatigue have all been shown to be associated with long sleep.
“In particular, depressive symptoms, low socioeconomic status, low level of physical activity, unemployment, undiagnosed health conditions, poor general health, and cancer-related fatigue have all been shown to be associated with long sleep (64).”
From Sleep Duration/Quality with Health Outcomes: An Umbrella Review of Meta-Analyses of Prospective Studies (2022) · cites this paper as [64]
The association between a long duration of sleep and mortality may be explained by residual confounding and comorbidities.
“The association between a long duration of sleep and mortality may be explained by residual confounding and comorbidities (64).”
From Sleep Duration/Quality with Health Outcomes: An Umbrella Review of Meta-Analyses of Prospective Studies (2022) · cites this paper as [64]
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Cites
The CES-D Scale: A Self-Report Depression Scale for Research in the General Population
Radloff, L. S. (1977) · Applied Psychological Measurement · doi:10.1177/014662167700100306 · Cited by 53,267 · see citing works
Validating the SF-36 health survey questionnaire: new outcome measure for primary care.
Brazier, J. E., Harper, R., Jones, N. M., O’Cathain, A., Thomas, K. J., Usherwood, T. P., & Westlake, L. (1992) · BMJ · doi:10.1136/bmj.305.6846.160 · Cited by 4,660 · see citing works
Impact of sleep debt on metabolic and endocrine function
Spiegel, K., Leproult, R., & Van Cauter, E. (1999) · The Lancet · doi:10.1016/s0140-6736(99)01376-8 · Cited by 3,668 · see citing works
Health inequalities among British civil servants: the Whitehall II study
Marmot, M. G., Stansfeld, S. A., Patel, C., North, F. M., Head, J. A., White, I. R., Brunner, E. J., Feeney, A., Marmot, M. G., & Smith, G. D. (1991) · The Lancet · doi:10.1016/0140-6736(91)93068-k · Cited by 3,571 · see citing works
Self-citationTaheri, S., Lin, L., Austin, D., Young, T., & Mignot, E. (2004) · PLoS Medicine · doi:10.1371/journal.pmed.0010062 · Cited by 2,477 · see citing works
Spiegel, K., Tasali, E., Penev, P., & Cauter, E. V. (2004) · Annals of Internal Medicine · doi:10.7326/0003-4819-141-11-200412070-00008 · Cited by 2,459 · see citing works
Meta-Analysis of Short Sleep Duration and Obesity in Children and Adults
Cappuccio, F. P., Taggart, F. M., Kandala, N.-B., Currie, A., Peile, E., Stranges, S., & Miller, M. A. (2008) · Sleep · doi:10.1093/sleep/31.5.619 · Cited by 2,076 · see citing works
Self-citationPHYSICAL ACTIVITY ASSESSMENT METHODOLOGY IN THE FIVE-CITY PROJECT1
SALLIS, J. F., HASKELL, W. L., WOOD, P. D., FORTMANN, S. P., ROGERS, T., BLAIR, S. N., & PAFFENBARGER, R. S. (1985) · American Journal of Epidemiology · doi:10.1093/oxfordjournals.aje.a113987 · Cited by 1,716 · see citing works
Mortality Associated With Sleep Duration and Insomnia
Kripke, D. F., Garfinkel, L., Wingard, D. L., Klauber, M. R., & Marler, M. R. (2002) · Archives of General Psychiatry · doi:10.1001/archpsyc.59.2.131 · Cited by 1,614 · see citing works
Gangwisch, J. E., Heymsfield, S. B., Boden-Albala, B., Buijs, R. M., Kreier, F., Pickering, T. G., Rundle, A. G., Zammit, G. K., & Malaspina, D. (2006) · Hypertension · doi:10.1161/01.hyp.0000217362.34748.e0 · Cited by 1,284 · see citing works
Aviation, Space, and Environmental Medicine
(2011) · Wilderness and Environmental Medicine · doi:10.1016/j.wem.2010.11.006 · Cited by 1,200 · see citing works
Sleep loss: a novel risk factor for insulin resistance and type 2 diabetes
Spiegel, K., Knutson, K., Leproult, R., Tasali, E., & Cauter, E. V. (2005) · Journal of Applied Physiology · doi:10.1152/japplphysiol.00660.2005 · Cited by 1,175 · see citing works
A Prospective Study of Sleep Duration and Coronary Heart Disease in Women
Ayas, N. T., White, D. P., Manson, J. E., Stampfer, M. J., Speizer, F. E., Malhotra, A., & Hu, F. B. (2003) · Archives of Internal Medicine · doi:10.1001/archinte.163.2.205 · Cited by 1,155 · see citing works
Employment grade and coronary heart disease in British civil servants.
Marmot, M. G., Rose, G., Shipley, M. J., & Hamilton, P. J. S. (1978) · Journal of Epidemiology & Community Health · doi:10.1136/jech.32.4.244 · Cited by 1,065 · see citing works
Self-citationInadequate Sleep as a Risk Factor for Obesity: Analyses of the NHANES I
Gangwisch, J. E., Malaspina, D., Boden-Albala, B., & Heymsfield, S. B. (2005) · Sleep · doi:10.1093/sleep/28.10.1289 · Cited by 905 · see citing works
A prospective study of self-reported sleep duration and incident diabetes in women
Ayas, N. T., White, D. P., Al-Delaimy, W. K., Manson, J. E., Stampfer, M. J., Speizer, F. E., Patel, S., & Hu, F. B. (2003) · Diabetes Care · doi:10.2337/diacare.26.2.380 · Cited by 883 · see citing works
Sleep duration as a risk factor for the development of type 2 diabetes
Yaggi, H. K., Araujo, A. B., & McKinlay, J. B. (2006) · Diabetes Care · doi:10.2337/diacare.29.03.06.dc05-0879 · Cited by 790 · see citing works
A Prospective Study of Sleep Duration and Mortality Risk in Women
Patel, S. R., Ayas, N. T., Malhotra, M. R., White, D. P., Schernhammer, E. S., Speizer, F. E., Stampfer, M. J., & Hu, F. B. (2004) · Sleep · doi:10.1093/sleep/27.3.440 · Cited by 663 · see citing works
Role of Sleep Duration and Quality in the Risk and Severity of Type 2 Diabetes Mellitus
Knutson, K. L. (2006) · Archives of Internal Medicine · doi:10.1001/archinte.166.16.1768 · Cited by 641 · see citing works
Comparison between subjective and actigraphic measurement of sleep and sleep rhythms
Lockley, S. W., Skene, D. J., & Arendt, J. (1999) · Journal of Sleep Research · doi:10.1046/j.1365-2869.1999.00155.x · Cited by 622 · see citing works
Objectively Measured Sleep Characteristics among Early-Middle-Aged Adults
Lauderdale, D. S., Knutson, K. L., Yan, L. L., Rathouz, P. J., Hulley, S. B., Sidney, S., & Liu, K. (2006) · American Journal of Epidemiology · doi:10.1093/aje/kwj199 · Cited by 581 · see citing works
Racial differences in self-reports of sleep duration in a population-based study
Hale, L., & Do, D. P. (2007) · SLEEP · doi:10.1093/sleep/30.9.1096 · Cited by 523 · see citing works
Ferrie, J. E., Shipley, M. J., Cappuccio, F. P., Brunner, E., Miller, M. A., Kumari, M., & Marmot, M. G. (2007) · Sleep · doi:10.1093/sleep/30.12.1659 · Cited by 515 · see citing works
Self-citationCappuccio, F. P., Stranges, S., Kandala, N.-B., Miller, M. A., Taggart, F. M., Kumari, M., Ferrie, J. E., Shipley, M. J., Brunner, E. J., & Marmot, M. G. (2007) · Hypertension · doi:10.1161/hypertensionaha.107.095471 · Cited by 512 · see citing works
Self-citationCorrelates of Long Sleep Duration
Patel, S. R., Malhotra, A., Gottlieb, D. J., White, D. P., & Hu, F. B. (2006) · Sleep · doi:10.1093/sleep/29.7.881 · Cited by 490 · see citing works
JACC Study Group (2004) · SLEEP · doi:10.1093/sleep/27.1.51 · Cited by 449 · see citing works
Sleep duration and health in young adults
Steptoe, A. (2006) · Archives of Internal Medicine · doi:10.1001/archinte.166.16.1689 · Cited by 425 · see citing works
Vorona, R. D., Winn, M. P., Babineau, T. W., Eng, B. P., Feldman, H. R., & Ware, J. C. (2005) · Archives of Internal Medicine · doi:10.1001/archinte.165.1.25 · Cited by 405 · see citing works
Habitual sleep patterns and risk for stroke and coronary heart disease
Qureshi, A. I., Giles, W. H., Croft, J. B., & Bliwise, D. L. (1997) · Neurology · doi:10.1212/wnl.48.4.904 · Cited by 335 · see citing works
Long sleep and mortality: rationale for sleep restriction
Youngstedt, S. D., & Kripke, D. F. (2004) · Sleep Medicine Reviews · doi:10.1016/j.smrv.2003.10.002 · Cited by 324 · see citing works
Socioeconomic Status and Health: The Role of Sleep
Moore, P. J., Adler, N. E., Williams, D. R., & Jackson, J. S. (2002) · Psychosomatic Medicine · doi:10.1097/00006842-200203000-00018 · Cited by 292 · see citing works
Hale, L. (2005) · Journal of Public Health · doi:10.1093/pubmed/fdi004 · Cited by 243 · see citing works
Sleep Duration and Body Mass Index in a Rural Population
Kohatsu, N. D. (2006) · Archives of Internal Medicine · doi:10.1001/archinte.166.16.1701 · Cited by 205 · see citing works
Stranges, S., Cappuccio, F. P., Kandala, N.-B., Miller, M. A., Taggart, F. M., Kumari, M., Ferrie, J. E., Shipley, M. J., Brunner, E. J., & Marmot, M. G. (2008) · American Journal of Epidemiology · doi:10.1093/aje/kwm302 · Cited by 196 · see citing works
Self-citationThe U-Shaped Association Between Sleep and Health: The 2 Peaks Do Not Mean the Same Thing
Knutson, K. L., & Turek, F. W. (2006) · Sleep · doi:10.1093/sleep/29.7.878 · Cited by 178 · see citing works
Zee, P. C. (2006) · Archives of Internal Medicine · doi:10.1001/archinte.166.16.1686 · Cited by 176 · see citing works
Sleep measurement in flight crew: comparing actigraphic and subjective estimates to polysomnography.
Signal, T. L., Gale, J., & Gander, P. H. (2005) · PubMed · Cited by 160 · see citing works
Alcohol drinking pattern and subjective health in a population‐based study
Stranges, S., Notaro, J., Freudenheim, J. L., Calogero, R. M., Muti, P. C., Farinaro, E., Russell, M., Nochajski, T. H., & Trevisan, M. (2006) · Addiction · doi:10.1111/j.1360-0443.2006.01517.x · Cited by 143 · see citing works
Self-citationSocioeconomic position and sleep quantity in UK adults
Adams, J. (2006) · Journal of Epidemiology and Community Health · doi:10.1136/jech.2005.039552 · Cited by 56 · see citing works
Evaluating the effects of medical disorders on sleep in the older patient.
Quan, S. F., & Zee, P. C. (2004) · PubMed · Cited by 23 · see citing works
Sleep-Related Breathing Disorders
Iber, C. (2005) · Neurologic Clinics · doi:10.1016/j.ncl.2005.08.001 · Cited by 21 · see citing works
Blindness Induced by Double-blindedness
Conn, H. O. (1981) · Archives of Internal Medicine · doi:10.1001/archinte.1981.00340070026007 · Cited by 11 · see citing works
Blindness induced by double-blindedness
Conn, H. O. (1981) · Archives of Internal Medicine · doi:10.1001/archinte.141.7.846 · Cited by 7 · see citing works
Flagged first, then by citations
Research works printed but not linked: 1
- Sallis JF, Haskell WL, Wood PD, et al. Physical activity as- sessment methodology in the Five-City Project. Am J Epide- miol. 1985;121(1):91-106.
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Cappuccio, F. P., D'Elia, L., Strazzullo, P., & Miller, M. A. (2010) · Sleep · doi:10.1093/sleep/33.5.585 · Cited by 2,224 · see citing works
Self-citationCappuccio, F. P., Cooper, D., D'Elia, L., Strazzullo, P., & Miller, M. A. (2011) · European Heart Journal · doi:10.1093/eurheartj/ehr007 · Cited by 2,146 · see citing works
Self-citationQuantity and Quality of Sleep and Incidence of Type 2 Diabetes
Cappuccio, F. P., D'Elia, L., Strazzullo, P., & Miller, M. A. (2010) · Diabetes Care · doi:10.2337/dc09-1124 · Cited by 1,670 · see citing works
Self-citationShort sleep duration and health outcomes: a systematic review, meta-analysis, and meta-regression
Itani, O., Jike, M., Watanabe, N., & Kaneita, Y. (2017) · Sleep Medicine · doi:10.1016/j.sleep.2016.08.006 · Cited by 1,252 · see citing works
Zhai, L., Zhang, H., & Zhang, D. (2015) · Depression and Anxiety · doi:10.1002/da.22386 · Cited by 786 · see citing works
Sleep Duration in the United States: A Cross-sectional Population-based Study
Krueger, P. M., & Friedman, E. M. (2009) · American Journal of Epidemiology · doi:10.1093/aje/kwp023 · Cited by 791 · see citing works
Stranges, S., Tigbe, W., Gómez-Olivé, F. X., Thorogood, M., & Kandala, N.-B. (2012) · Sleep · doi:10.5665/sleep.2012 · Cited by 592 · see citing works
Self-citationBoyle, P. A., Buchman, A. S., Barnes, L. L., & Bennett, D. A. (2010) · Archives of General Psychiatry · doi:10.1001/archgenpsychiatry.2009.208 · Cited by 580 · see citing works
Kwok, C. S., Kontopantelis, E., Kuligowski, G., Gray, M., Muhyaldeen, A., Gale, C. P., Peat, G. M., Cleator, J., Chew‐Graham, C., Loke, Y. K., et al. (2018) · Journal of the American Heart Association · doi:10.1161/jaha.118.008552 · Cited by 506 · see citing works
The Great Sleep Recession: Changes in Sleep Duration Among US Adolescents, 1991–2012
Keyes, K. M., Maslowsky, J., Hamilton, A., & Schulenberg, J. (2015) · Pediatrics · doi:10.1542/peds.2014-2707 · Cited by 490 · see citing works
Interplay between social media use, sleep quality, and mental health in youth: a systematic review
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Self-citationvon Ruesten, A., Weikert, C., Fietze, I., & Boeing, H. (2012) · PLoS ONE · doi:10.1371/journal.pone.0030972 · Cited by 262 · see citing works
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Bansil, P., Kuklina, E. V., Merritt, R. K., & Yoon, P. W. (2011) · The Journal of Clinical Hypertension · doi:10.1111/j.1751-7176.2011.00500.x · Cited by 180 · see citing works
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Self-citation
- Authors
- Stranges, S., Dorn, J. M., Shipley, M. J., Kandala, N.-B., Trevisan, M., Miller, M. A., Donahue, R. P., Hovey, K. M., Ferrie, J. E., Marmot, M. G., & Cappuccio, F. P.
- Affiliations
- University of Warwick (GB)
- University Hospitals Coventry and Warwickshire NHS Trust (GB)
- Venue
- American Journal of Epidemiology
- Publisher
- Oxford University Press (OUP)
- Published
- 2008-10-22
- Volume
- 168
- Issue
- 12
- Pages
- 1353-1364
- ISSN
- 0002-9262 (ISSN-L)
- 1476-6256
- PMC
- PMC2727192
- OpenAlex
- W2086258247
- Cited by
- 344
- References
- 43
- Citations by year
- 2026: 9 · 2025: 14 · 2024: 17 · 2023: 15 · 2022: 20 · 2021: 19 · 2020: 25 · 2019: 18 · 2018: 30 · 2017: 20 · 2016: 24 · 2015: 26 · 2014: 20 · 2013: 27 · 2012: 23
- FWCI
- 15.88
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- American Journal of Epidemiology (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- UCL Discovery (University College London) (submittedVersion)
- Funders
- U.S. Department of Health and Human Services
- John D. and Catherine T. MacArthur Foundation (HS06516)
- National Institute for Health and Care Research
- British Heart Foundation (HS06516, RG/07/008/23674)
- University of Warwick
- University College London
- Health and Safety Executive
- National Institutes of Health (NIH-R01)
- Agency for Healthcare Research and Quality (HS06516)
- Medical Research Council (HS06516, G8802774)
- Warwick Medical School
- National Institute on Alcohol Abuse and Alcoholism (P50AA009802, 5 P50 AA0980)
- National Institute on Aging (AG 13196, R37AG013196, R01AG013196)
- National Heart, Lung, and Blood Institute (HS06516, HL36310, NIH R01, R01HL036310)
- National Institute of Diabetes and Digestive and Kidney Diseases (R01DK060587, R01 DK60587)
- Topics
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and related disorders
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and Work-Related Fatigue
- Social Sciences › Health › Health disparities and outcomes
- Keywords
- sleep duration, short sleep duration, long sleep, U-shaped relationship, marital status, body mass index, physical activity, physical function, mental health, cross-cultural comparison, Whitehall II study, sociodemographic factors, lifestyle factors, comorbidities, United Kingdom, United States, age differences, sex differences
- MeSH terms
- Age Factors, Aged, Cross-Cultural Comparison, Female, Follow-Up Studies, United Kingdom, Health Status, Humans, Life Style, Male, Middle Aged, New York, Retrospective Studies, Risk Factors, Sex Factors, Sleep, Sleep Wake Disorders
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