Validity of Self-Reported Night Shift Work Among Women with and Without Breast Cancer

Details

• Personal Author:
  Bonde JPE ; Costello S ; Dalbøge A ; Garde AH ; Hansen ÅM ; Hansen J ; Härmä M ; Haug JND ; Kolstad HA ; Larsen AD ; Vestergaard JM
• Description:
  Objectives: This study aimed to estimate the validity of self-reported information on ever-night shift work among women with and without breast cancer and illustrate the consequences for breast cancer risk estimates. Methods: During 2015-2016, 225 women diagnosed with breast cancer and 1800 matched controls without breast cancer employed within the Danish hospital regions during 2007-2016 participated in a questionnaire-based survey. Their reported night shift work status was linked with objective payroll register day-by-day working hour data from the Danish Working Hour Database and the Danish Cancer Registry. For the breast cancer patients and their matched controls, we estimated sensitivity and specificity for ever-working night shifts using the payroll data as the gold standard. We also used quantitative bias analysis to estimate the impact on relative risk estimates for a hypothetical population. Results: For breast cancer patients, we observed a sensitivity of ever-night shifts of 86.2% and a specificity of never-night shifts of 82.6%. For controls, the sensitivity was 80.6% and the specificity 83.7%. Odds ratio for breast cancer in a hypothetical population decreased from 1.12 [95% confidence interval (CI) 1.03-1.21] to 1.05 (95% CI 0.95-1.16) when corrected by the sensitivity and specificity estimates. Conclusion: This study shows that female breast cancer patients had slightly better recall of previous night shift work than controls. Additionally, both breast cancer patients and controls recalled previous never-night shift work with low specificity. The net effect of this misclassification is a small over-estimation of the relative breast cancer risk due to night shift work. [Description provided by NIOSH]
• Subjects:
  Health Personnel Occupational Health Safety Shift Work Schedule
• Keywords:
  Author Keywords: Case Breast Cancer Case Control Studies Control Gold Standard Health Care Workers Misclassification Night Work Patient Shift Work Validation Study Work Schedules

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• ISSN:
  0355-3140
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  California ; OSHA Region 9
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  152-157
• Volume:
  50
• Issue:
  3
• NIOSHTIC Number:
  nn:20069292
• Citation:
  Scand J Work Environ Health 2024 Apr; 50(3):152-157
• Contact Point Address:
  Jesper Medom Vestergaard, Department of Occupational Medicine, Danish Ramazzini Centre, Institute of Clinical Medicine, Aarhus University Hospital, Aarhus, Denmark
• Email:
  jespvest@rm.dk
• Federal Fiscal Year:
  2024
• Performing Organization:
  University of California, Berkeley
• Peer Reviewed:
  True
• Start Date:
  20050701
• Source Full Name:
  Scandinavian Journal of Work, Environment & Health
• End Date:
  20250630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:a048ce42520aec9bc356a5c3039858d7384c4c750fb8331bbcd83df94852b09c19c1a7e6a8e68214c9105abb32f415e4ec8b4563fca6c9306686e5eda3a6798e
• Download URL:
  https://stacks.cdc.gov/view/cdc/207795/cdc_207795_DS1.pdf
• File Type:
  [PDF - 332.16 KB ]