Article2006

Sleep Duration and Health in Young Adults

425 citations0/0 files storedArchives of Internal Medicine

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Abstract

BACKGROUND: Both long and short sleep durations have been associated with negative health outcomes in middle-aged and older adults. This study assessed the relationship between sleep duration and self-rated health in young adults. METHODS: Using anonymous questionnaires, data were collected from 17 465 university students aged 17 to 30 years who were taking non-health-related courses at 27 universities in 24 countries. The response rate was greater than 90%. Sleep duration was measured by self-report; the health outcome was self-rated health; and age, sex, socioeconomic background, smoking, alcohol consumption, body mass index, physical activity, depression (Beck Depression Inventory), recent use of health services, and country of origin were included as covariates. RESULTS: Sixty-three percent of respondents slept for 7 to 8 hours; 21% were short sleepers (6%, <6 hours; 15%, 6-7 hours); and 16% were long sleepers (10%, 8-10 hours; 6%, >10 hours). Compared with the reference category (7-8 hours), the adjusted odds ratio of poor health was 1.56 (95% confidence interval [CI], 1.22-1.99) for respondents sleeping 6 to 7 hours and 1.99 (95% CI, 1.31-3.03) for those sleeping less than 6 hours. The same significant pattern was seen when the results were analyzed separately by sex. When respondents from Japan, Korea, and Thailand (characterized by relatively short sleep durations) were excluded, the adjusted odds ratios were 1.33 (95% CI 1.03-1.73) and 1.62 (95% CI, 1.06-2.48) for those sleeping 6 to 7 hours and less than 6 hours, respectively. There were no significant associations between self-rated health and long sleep duration. CONCLUSION: Our data suggest that short sleep may be more of a concern than long sleep in young adults.

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References

1972Screening Depressed Patients in Family Practice 2002Mortality Associated With Sleep Duration and Insomnia 2006Short Sleep Duration as a Risk Factor for Hypertension 2003A Prospective Study of Sleep Duration and Coronary Heart Disease in Women 2005Inadequate Sleep as a Risk Factor for Obesity: Analyses of the NHANES I 2006Sleep Duration as a Risk Factor for the Development of Type 2 Diabetes 2004A Prospective Study of Sleep Duration and Mortality Risk in Women 2004Self-Reported Sleep Duration as a Predictor of All-Cause Mortality: Results from the JACC Study, Japan

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