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Associations Among Rotating Night Shift Work, Sleep, and Skin Cancer in Nurses’ Health Study II Participants
  • Published Date:
    Sep 23 2016
  • Source:
    Occup Environ Med. 74(3):169-175.


Public Access Version Available on: March 01, 2018 information icon
Please check back on the date listed above.
Details:
  • Pubmed ID:
    27663986
  • Pubmed Central ID:
    PMC5316344
  • Description:
    Background

    Night shift work and sleep duration have been associated with breast and other cancers. Results from the few prior studies of night shift work and skin cancer risk have been mixed and not fully accounted for other potentially important health-related variables (e.g., sleep characteristics). This study evaluated the relationship between rotating night shift work and skin cancer risk and included additional skin cancer risk factors and sleep-related variables.

    Methods

    The current study used data from 74,323 Nurses’ Health Study (NHS) II participants. Cox proportional hazards models were used to estimate multivariable-adjusted hazard ratios (HRs) and 95% confidence intervals (CIs) for skin cancers across categories of shift work and sleep duration.

    Results

    Over 10 years of follow-up, 4308 BCC, 334 SCC and 212 melanoma cases were identified. Longer duration of rotating night shifts was associated with a linear decline in risk of BCC (HR=0.93, 95% CI: 0.90-0.97 per 5-year increase). Shift work was not significantly associated with either melanoma (HR=1.02, 95% CI: 0.86-1.21) or SCC (HR=0.92, 95% CI: 0.80-1.06). A short sleep duration (≤6 hours per day) was associated with lower risks of melanoma (HR=0.68, 95% CI: 0.46-0.98) and BCC (HR=0.93, 95% CI: 0.86-1.00) compared with the most common report of 7 hours. SCC was not associated with duration of sleep (HR=0.94, 95% CI: 0.83-1.06).

    Conclusions

    Longer duration of rotating night shift work and shorter sleep duration were associated with lower risk of some skin cancers. Further research is needed to confirm and identify the mechanisms underlying these associations.

  • Document Type:
  • Funding:
    P30 CA006927/CA/NCI NIH HHS/United States
    R01 OH009803/OH/NIOSH CDC HHS/United States
    UM1 CA176726/CA/NCI NIH HHS/United States
    UM1 CA186107/CA/NCI NIH HHS/United States
  • Supporting Files:
    No Additional Files
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