Copyright © 2005 by the Johns Hopkins Bloomberg School of Public Health
ORIGINAL CONTRIBUTIONS |
Occupational Magnetic Fields and Female Breast Cancer: A Case-Control Study using Swedish Population Registers and New Exposure Data
1 Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
2 Department of Medicine, Huddinge University Hospital, Karolinska Institutet, Stockholm, Sweden.
3 Division of Epidemiology, Stockholm Center of Public Health, Stockholm, Sweden.
Several recent epidemiologic studies on occupational magnetic field exposure have suggested an association with female breast cancer. The purpose of this study was to test this hypothesis by using the extensive Swedish population registers in combination with improved exposure assessment. The study base consisted of all women between 1976 and 1999 gainfully employed in Stockholm or Gotland County in Sweden. A total of 20,400 cases of breast cancer were identified from the cancer registry, and 116,227 controls were selected randomly from the study base. Information was available on estrogen receptor status, occupation, socioeconomic status, and age. Parity was available for a subset. The exposure was assessed by linkage to a newly developed job-exposure matrix based on personal magnetic field measurements on women. All risk estimates were close to unity regardless of exposure cutpoint or choice of exposure parameter. The overall odds ratio for women exposed to 0.30 µT or more was 1.01 (95% confidence interval: 0.93, 1.10). The size of the study allowed for estimates with good precision also in subgroups where previous studies have suggested increased risk, but the findings do not support the hypothesis that magnetic fields influence the risk of female breast cancer.
breast neoplasms; case-control studies; electromagnetic fields; female; receptors, estrogen
Abbreviations: CI, confidence interval.
Correspondence to Dr. Ulla Forssén, Institute of Environmental Medicine, Karolinska Institutet, P.O. Box 210, SE-171 77 Stockholm, Sweden (e-mail: ulla.forssen{at}imm.ki.se).
CiteULike 
Connotea 
Del.icio.us What's this?
This article has been cited by other articles:
|
|
 |
|
  L Kheifets, J D Bowman, H Checkoway, M Feychting, J M Harrington, R Kavet, G Marsh, G Mezei, D C Renew, and E van Wijngaarden Future needs of occupational epidemiology of extremely low frequency electric and magnetic fields: review and recommendations Occup. Environ. Med., February 1, 2009; 66(2): 72 - 80. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 L Richiardi, F Barone-Adesi, F Merletti, and N Pearce Using directed acyclic graphs to consider adjustment for socioeconomic status in occupational cancer studies J Epidemiol Community Health, July 1, 2008; 62(7): e14 - e14. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
C. Johansen, O. Raaschou Nielsen, J. H Olsen, and J. Schuz Risk for leukaemia and brain and breast cancer among Danish utility workers: a second follow-up Occup. Environ. Med., November 1, 2007; 64(11): 782 - 784. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 T. C. Erren RE: "OCCUPATIONAL MAGNETIC FIELDS AND FEMALE BREAST CANCER: A CASE-CONTROL STUDY USING SWEDISH POPULATION REGISTERS AND NEW EXPOSURE DATA" Am. J. Epidemiol., August 15, 2005; 162(4): 392 - 393. [Full Text] [PDF]
|
|
|
|
|
|
U. M. Forssen, L. E. Rutqvist, A. Ahlbom, and M. Feychting THE AUTHORS REPLY Am. J. Epidemiol., August 15, 2005; 162(4): 393 - 394. [Full Text] [PDF]
|
|
|
|
 |
|
 Occupational Magnetic Field Exposure: No Breast Cancer Link Journal Watch Women's Health, March 22, 2005; 2005(322): 2 - 2. [Full Text]
|
|