A model to assess personal exposure to ELF magnetic fields from common household sources

Delpizzo, Vincent

doi:10.1002/bem.2250110205

Cited by 24 publications

(9 citation statements)

References 13 publications

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“…39 A substantial number of subjects in our population reported regular use of an electric-heating device (1 12 cases, 307 controls), resulting in a relatively stable estimate of no increased risk, and this is consistent with other report^.^^,^^ Misclassification may have occurred if some subjects remembered their use of these appliance inaccurately. In addition, actual exposure from these appliances varies according to patterns of use (e.g., how long each night it is used, at what temperature it is set, how long it is used each year).…”

Section: Discussionsupporting

confidence: 87%

Exposure to Power Frequency Magnetic Fields and Risk of Breast Cancer in the Upper Cape Cod Cancer Incidence Study

Coogan

Aschengrau

1998

Archives of Environmental Health: An International Journal

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Investigators used a population-based case-control study to evaluate the relationship between breast cancer risk and exposure to 60-Hz magnetic fields from various sources. There was no increase in breast cancer risk associated with (a) holding a job with high (odds ratio [OR] = 1.2; 95% confidence interval [CI] = 0.4, 3.4) or medium (OR = 0.9; 95% CI = 0.5, 1.7) exposure to magnetic fields; (b) living in a home heated electrically (OR = 1.0; 95% CI = 0.7, 1.4); or (c) sleeping with an electric blanket (OR = 1.0; 95% CI = 0.7, 1.4). There was a nonsignificant 50% increase in risk for subjects who lived within 152 m (500 ft) of an electricity transmission line or substation (OR = 1.5; 95% CI = 0.6, 3.3). Although limited by small numbers and exposure misclassification, the data in this study did not support the hypothesis that exposure to 60-Hz magnetic fields increases the risk of breast cancer in women.

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Section: Discussionsupporting

confidence: 87%

Exposure to Power Frequency Magnetic Fields and Risk of Breast Cancer in the Upper Cape Cod Cancer Incidence Study

Coogan

Aschengrau

1998

Archives of Environmental Health: An International Journal

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“…By including the use of electric blankets in a re-analysis of the same data, Wertheimer and Leeper [1989] altered the results enough to indicate an increased risk with greater exposure. In another, admittedly speculative study, Delpizzo [1990] reconciled some of these apparent discrepancies by defining "significant household exposure levels. "…”

Section: Introductionmentioning

confidence: 93%

Residential exposure to 60‐Hz magnetic fields from appliances

Mader

Peralta

1992

Bioelectromagnetics

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A model has been developed that permits assessment of residential exposure to 60-Hz magnetic fields emitted by appliances. It is based on volume- and time-averaging of magnetic-dipole fields. The model enables the contribution of appliances in the total residential exposure to be compared with that of other sources in any residence under study. Calculations based on measurements reported in the literature on 98 appliances revealed that appliances are not a significant source of whole-body exposure, but that they may be the dominant source of exposure of the body's extremities.

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“…In a theoretical analysis, extremely-low-frequency magnetic was turned off, and the case was sealed, so that the child could not touch any switches. The children and fields generated by several household sources were compared with external sources [Delpizzo, 1990]. The their parents were instructed to place the instrument near the child's bed at night but not close to an electric contribution to exposure from electric blankets, waterbed heaters, and concrete slab heaters were found clock or other appliance.…”

Section: Dmentioning

confidence: 99%

“…The children and fields generated by several household sources were compared with external sources [Delpizzo, 1990]. The display tial exposure has been questioned for years.…”

Section: Introductionmentioning

confidence: 99%

Exposure of children to residential magnetic fields in Norway: Is proximity to power lines an adequate predictor of exposure?

Vistnes¹,

Ramberg²,

Bjørnevik³

et al. 1997

Bioelectromagnetics

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The aim of this work was to study the exposure to magnetic fields of children living at different distances from a power line and to evaluate how well theoretical calculations compared with actual exposure. Personal exposure instruments were carried for 24 h by 65 schoolchildren living 28-325 m from a 300 kV transmission line; the current load was 200-700 A. About half of the children attended a school far from the power line, whereas the other half attended a school located about 25 m from the line. Exposure to magnetic fields was analyzed for three categories of location: at home, at school, and at all other places. Time spent in bed was analyzed separately. The results indicated that children who lived close to a power line had a higher magnetic field exposure than other children. The power line was the most important source of exposure when the magnetic field due to the line was greater than about 0.2 microT. Exposure at school influenced the 24 h time-weighted average results considerably in those cases where the distance between home and power line was very different from the distance between school and power line. The calculated magnetic field, based on line configuration, current load, and distance between home and power line, corresponded reasonably well with the measured field. However, the correlation depends on whether home only or 24 h exposure is used in the analysis and on which school the children attended. The calculated magnetic field seems to be a reasonably good predictor of actual exposure and could be used in epidemiological studies, at least in Norway, where the electrical system normally results in less ground current than in most other countries.

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A model to assess personal exposure to ELF magnetic fields from common household sources

Cited by 24 publications

References 13 publications

Exposure to Power Frequency Magnetic Fields and Risk of Breast Cancer in the Upper Cape Cod Cancer Incidence Study

Exposure to Power Frequency Magnetic Fields and Risk of Breast Cancer in the Upper Cape Cod Cancer Incidence Study

Residential exposure to 60‐Hz magnetic fields from appliances

Exposure of children to residential magnetic fields in Norway: Is proximity to power lines an adequate predictor of exposure?

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