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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
biochemistry, genetics and molecular biology
A model for radiofrequency electromagnetic field predictions at outdoor and indoor locations in the context of epidemiological research
Bioelectromagnetics, Volume 31, No. 3, Year 2010
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Description
We present a geospatial model to predict the radiofrequency electromagnetic field from fixed site transmitters for use in epidemiological exposure assessment. The proposed model extends an existing model toward the prediction of indoor exposure, that is, at the homes of potential study participants. The model is based on accurate operation parameters of all stationary transmitters of mobile communication base stations, and radio broadcast and television transmitters for an extended urban and suburban region in the Basel area (Switzerland). The model was evaluated by calculating Spearman rank correlations and weighted Cohen's kappa (κ) statistics between the model predictions and measurements obtained at street level, in the homes of volunteers, and in front of the windows of these homes. The correlation coefficients of the numerical predictions with street level measurements were 0.64, with indoor measurements 0.66, and with window measurements 0. 67. The kappa coefficients were 0.48 (95%-confidence interval:0.35-0.61) for street level measurements, 0.44 (95%-CI:0.32-0.57) for indoor measurements, and 0.53 (95%-CI:0.42-0.65) for window measurements. Although the modeling of shielding effects by walls and roofs requires considerable simplifications of a complex environment, we found a comparable accuracy of the model for indoor and outdoor points. © 2009 Wiley-Liss, Inc.
Authors & Co-Authors
Egger, Matthias
Switzerland, Bern
University of Bern
Röösli, Martin
Switzerland, Bern
University of Bern
Switzerland, Allschwil
Swiss Tropical and Public Health Institute Swiss Tph
Statistics
Citations: 70
Authors: 2
Affiliations: 4
Identifiers
Doi:
10.1002/bem.20552
ISSN:
01978462