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Sleep duration and risk of breast cancer : The JACC Study

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/76650

Title: Sleep duration and risk of breast cancer : The JACC Study
Authors: Cao, Jinhong Browse this author
Eshak, Ehab S. Browse this author
Liu, Keyang Browse this author
Muraki, Isao Browse this author →KAKEN DB
Cui, Renzhe Browse this author →KAKEN DB
Iso, Hiroyasu Browse this author →KAKEN DB
Tamakoshi, Akiko Browse this author →KAKEN DB
Mori, Mitsuru Browse this author
Kaneko, Yoshihiro Browse this author
Tsuji, Ichiro Browse this author
Nakamura, Yosikazu Browse this author
Yamagishi, Kazumasa Browse this author
Mikami, Haruo Browse this author
Kurosawa, Michiko Browse this author
Hoshiyama, Yoshiharu Browse this author
Tanabe, Naohito Browse this author
Tamakoshi, Koji Browse this author
Wakai, Kenji Browse this author
Tokudome, Shinkan Browse this author
Suzuki, Koji Browse this author
Hashimoto, Shuji Browse this author
Yatsuya, Hiroshi Browse this author
Kikuchi, Shogo Browse this author
Wada, Yasuhiko Browse this author
Kawamura, Takashi Browse this author
Watanabe, Yoshiyuki Browse this author
Ozasa, Kotaro Browse this author
Mikami, Kazuya Browse this author
Date, Chigusa Browse this author
Sakata, Kiyomi Browse this author
Kurozawa, Yoichi Browse this author
Yoshimura, Takesumi Browse this author
Fujino, Yoshihisa Browse this author
Shibata, Akira Browse this author
Okamoto, Naoyuki Browse this author
Shio, Hideo Browse this author
Keywords: Sleep duration
Breast cancer
Incidence
Cohort study
Postmenopausal
Parity
Japan
Issue Date: Feb-2019
Publisher: Springer
Journal Title: Breast cancer research and treatment
Volume: 174
Issue: 1
Start Page: 219
End Page: 225
Publisher DOI: 10.1007/s10549-018-4995-4
PMID: 30460465
Abstract: PurposeThe evidence on beneficial or adverse effects of sleep duration on risk of breast cancer remains controversial and limited, especially in Asia.MethodsA prospective study of 34,350 women aged 40-79years in whom sleep duration, and menstrual and reproductive histories were determined by a self-administered questionnaire. The follow-up period was from 1988 to 2009, and hazard ratios (HRs) with 95% confidence intervals (CIs) of breast cancer incidence were calculated for shorter sleep duration in reference to sleep duration of 8h/day by Cox proportional hazard models.ResultsDuring 19.2-year median follow-up (236 cases), we found a significant inverse association between sleep duration and risk of breast cancer, especially among postmenopausal women and women with low parity (nulliparous and women with <3 children); the multivariable HRs (95% CIs) among postmenopausal women who reported 7h/day and 6h/day of sleep in reference to 8h/day were 1.49 (0.81-2.76) and 1.98 (1.08-3.70) (P for trend=0.028), respectively, and the corresponding values among women with low parity were 1.50 (0.96-2.35) and 1.76 (1.01-2.79) (P for trend=0.018).ConclusionsShort sleep duration was associated with increased risk of incident breast cancer, especially among postmenopausal women and women with low parity.
Rights: The final publication is available at link.springer.com
Type: article (author version)
URI: http://hdl.handle.net/2115/76650
Appears in Collections:医学院・医学研究院 (Graduate School of Medicine / Faculty of Medicine) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 玉腰 暁子

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