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Author (up) Fritschi, L.; Erren, T.C.; Glass, D.C.; Girschik, J.; Thomson, A.K.; Saunders, C.; Boyle, T.; El-Zaemey, S.; Rogers, P.; Peters, S.; Slevin, T.; D'Orsogna, A.; de Vocht, F.; Vermeulen, R.; Heyworth, J.S. url  doi
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  Title The association between different night shiftwork factors and breast cancer: a case-control study Type Journal Article
  Year 2013 Publication British Journal of Cancer Abbreviated Journal Br J Cancer  
  Volume 109 Issue 9 Pages 2472-2480  
  Keywords Adult; Aged; Aged, 80 and over; Breast Neoplasms/*epidemiology/etiology; Case-Control Studies; Female; Humans; Life Style; Middle Aged; Questionnaires; Risk; Risk Factors; Western Australia/epidemiology; *Work Schedule Tolerance; Young Adult; oncogenesis  
  Abstract BACKGROUND: Research on the possible association between shiftwork and breast cancer is complicated because there are many different shiftwork factors, which might be involved including: light at night, phase shift, sleep disruption and changes in lifestyle factors while on shiftwork (diet, physical activity, alcohol intake and low sun exposure). METHODS: We conducted a population-based case-control study in Western Australia from 2009 to 2011 with 1205 incident breast cancer cases and 1789 frequency age-matched controls. A self-administered questionnaire was used to collect demographic, reproductive, and lifestyle factors and lifetime occupational history and a telephone interview was used to obtain further details about the shiftwork factors listed above. RESULTS: A small increase in risk was suggested for those ever doing the graveyard shift (work between midnight and 0500 hours) and breast cancer (odds ratio (OR)=1.16, 95% confidence interval (CI)=0.97-1.39). For phase shift, we found a 22% increase in breast cancer risk (OR=1.22, 95% CI=1.01-1.47) with a statistically significant dose-response relationship (P=0.04). For the other shiftwork factors, risks were marginally elevated and not statistically significant. CONCLUSION: We found some evidence that some of the factors involved in shiftwork may be associated with breast cancer but the ORs were low and there were inconsistencies in duration and dose-response relationships.  
  Address Western Australian Institute for Medical Research, The University of Western Australia, Nedlands, Western Australia, Australia  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0007-0920 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:24022188; PMCID:PMC3817316 Approved no  
  Call Number IDA @ john @ Serial 153  
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