The New England Journal of Medicine
e-mail icon  FREE NEJM E-TOC    HOME   |   SUBSCRIBE   |   CURRENT ISSUE   |   PAST ISSUES   |   COLLECTIONS   |    Advanced Search
Sign in | Get NEJM's E-Mail Table of Contents — Free | Subscribe
 
Original Article
Volume 337:1-8 July 3, 1997 Number 1
NextNext

Residential Exposure to Magnetic Fields and Acute Lymphoblastic Leukemia in Children
Martha S. Linet, M.D., Elizabeth E. Hatch, Ph.D., Ruth A. Kleinerman, M.P.H., Leslie L. Robison, Ph.D., William T. Kaune, Ph.D., Dana R. Friedman, Ph.D., Richard K. Severson, Ph.D., Carol M. Haines, M.P.H., Charleen T. Hartsock, B.S., Shelley Niwa, M.A., Sholom Wacholder, Ph.D., and Robert E. Tarone, Ph.D.

 Sign up for free e-toc
 

This Article
-Full Text
- PDF

Commentary
-Letters

Tools and Services
-Add to Personal Archive
-Add to Citation Manager
-Notify a Friend
-E-mail When Cited

More Information
-PubMed Citation
ABSTRACT

Background Previous studies found associations between childhood leukemia and surrogate indicators of exposure to magnetic fields (the power-line classification scheme known as "wire coding"), but not between childhood leukemia and measurements of 60-Hz residential magnetic fields.

Methods We enrolled 638 children with acute lymphoblastic leukemia (ALL) who were under 15 years of age and were registered with the Children's Cancer Group and 620 controls in a study of residential exposure to magnetic fields generated by nearby power lines. In the subjects' current and former homes, data collectors blinded to the subjects' health status measured magnetic fields for 24 hours in each child's bedroom and for 30 seconds in three or four other rooms and outside the front door. A computer algorithm assigned wire-code categories, based on the distance and configuration of nearby power lines, to the subjects' main residences (for 416 case patients and 416 controls) and to those where the family had lived during the mother's pregnancy with the subject (for 230 case patients and 230 controls).

Results The risk of childhood ALL was not linked to summary time-weighted average residential magnetic-field levels, categorized according to a priori criteria. The odds ratio for ALL was 1.24 (95 percent confidence interval, 0.86 to 1.79) at exposures of 0.200 µT or greater as compared with less than 0.065 µT. The risk of ALL was not increased among children whose main residences were in the highest wire-code category (odds ratio as compared with the lowest category, 0.88; 95 percent confidence interval, 0.48 to 1.63). Furthermore, the risk was not significantly associated with either residential magnetic-field levels or the wire codes of the homes mothers resided in when pregnant with the subjects.

Conclusions Our results provide little evidence that living in homes characterized by high measured time-weighted average magnetic-field levels or by the highest wire-code category increases the risk of ALL in children.


Source Information

From the Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, Md. (M.S.L., E.E.H., R.A.K., D.R.F., S.W., R.E.T.); the Children's Cancer Group, Arcadia, Calif. (L.L.R., R.K.S.); the Division of Pediatric Epidemiology and Clinical Research, University of Minnesota School of Medicine, Minneapolis (L.L.R., R.K.S.); EM Factors, Richland, Wash. (W.T.K.); Westat, Inc., Rockville, Md. (C.M.H., S.N.); and Information Management Services, Rockville, Md. (C.T.H.). Investigators and institutions participating in the Children's Cancer Group are listed in the Appendix.

Address reprint requests to Dr. Linet at the Division of Cancer Epidemiology and Genetics, National Cancer Institute, Executive Plaza North, Suite 408, Bethesda, MD 20892-7362.

Full Text of this Article


Related Letters:

Leukemia and Exposure to Magnetic Fields
Wartenberg D., Stevens R. G., Levallois P., Gauvin D., Gochfeld M., Funk H., Neutra R. R., Kabat G. C., Linet M. S., Tarone R. E., Robison L. L., Campion E. W.
Extract | Full Text  
N Engl J Med 1997; 337:1471-1474, Nov 13, 1997. Correspondence

This article has been cited by other articles:



HOME  |  SUBSCRIBE  |  SEARCH  |  CURRENT ISSUE  |  PAST ISSUES  |  COLLECTIONS  |  PRIVACY  |  TERMS OF USE  |  HELP  |  beta.nejm.org

Comments and questions? Please contact us.

The New England Journal of Medicine is owned, published, and copyrighted © 2010 Massachusetts Medical Society. All rights reserved.