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Br J Cancer. 2008 Jul 8;99(1):176-8. doi: 10.1038/sj.bjc.6604425. Epub 2008 Jun 10.

Sleep duration and the risk of prostate cancer: the Ohsaki Cohort Study.

Author information

1
Division of Epidemiology, Department of Public Health and Forensic Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan. m-kaki@umin.ac.jp

Abstract

In a prospective study of prostate cancer incidence (127 cases), among 22 320 Japanese men, sleep duration was associated with lower risk; the multivariate hazard ratio of men who slept >or=9 h per day compared with those who slept less was 0.48 (95% confidence interval: 0.29-0.79, P for trend=0.02).

PMID:
18542076
PMCID:
PMC2453016
DOI:
10.1038/sj.bjc.6604425
[Indexed for MEDLINE]
Free PMC Article

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