Location of gliomas in relation to mobile telephone use: a case-case and case-specular analysis.
نویسندگان
چکیده
The energy absorbed from the radio-frequency fields of mobile telephones depends strongly on distance from the source. The authors' objective in this study was to evaluate whether gliomas occur preferentially in the areas of the brain having the highest radio-frequency exposure. The authors used 2 approaches: In a case-case analysis, tumor locations were compared with varying exposure levels; in a case-specular analysis, a hypothetical reference location was assigned for each glioma, and the distances from the actual and specular locations to the handset were compared. The study included 888 gliomas from 7 European countries (2000-2004), with tumor midpoints defined on a 3-dimensional grid based on radiologic images. The case-case analyses were carried out using unconditional logistic regression, whereas in the case-specular analysis, conditional logistic regression was used. In the case-case analyses, tumors were located closest to the source of exposure among never-regular and contralateral users, but not statistically significantly. In the case-specular analysis, the mean distances between exposure source and location were similar for cases and speculars. These results do not suggest that gliomas in mobile phone users are preferentially located in the parts of the brain with the highest radio-frequency fields from mobile phones.
منابع مشابه
Original Contribution Location of Gliomas in Relation to Mobile Telephone Use: A Case-Case and Case-Specular Analysis
Suvi Larjavaara*, Joachim Schüz, Anthony Swerdlow, Maria Feychting, Christoffer Johansen, Susanna Lagorio, Tore Tynes, Lars Klaeboe, Sven Reidar Tonjer, Maria Blettner, Gabriele Berg-Beckhoff, Brigitte Schlehofer, Minouk Schoemaker, Juliet Britton, Riitta Mäntylä, Stefan Lönn, Anders Ahlbom, Olof Flodmark, Anders Lilja, Stefano Martini, Emanuela Rastelli, Antonello Vidiri, Veikko Kähärä, Jani R...
متن کاملComparative Benefits of Mobile Telephone in Selected Rural and Urban Locations of Obio/Akpor Local Government
The study comparatively identified the benefits of mobile telephone to users in selected rural and urban locations in Obio/Akpor local government area of Rivers State, Nigeria. Stratified and simple random sampling techniques were used in selecting 60 rural and 60 urban phone users to have a total sample size of 120 respondents. Structured questionnaire was used to generate data that were analy...
متن کاملUnderstanding Temporal Human Mobility Patterns in a City by Mobile Cellular Data Mining, Case Study: Tehran City
Recent studies have shown that urban complex behaviors like human mobility should be examined by newer and smarter methods. The ubiquitous use of mobile phones and other smart communication devices helps us use a bigger amount of data that can be browsed by the hours of the day, the days of the week, geographic area, meteorological conditions, and so on. In this article, mobile cellular data mi...
متن کاملUnderstanding the roles of different stakeholders influencing the use of mobile phones to access agricultural information: A Case of Kilolo and Kilosa Districts, Tanzania
The study investigated the roles of different stakeholders influencing the use of mobile phones in accessing agricultural information in Tanzania. While information is becoming an important ingredient in agriculture, farmers in Tanzania suffer the problem of lacking access to agricultural information. Promisingly, mobile phone technology has become the most valued infrastructure which gives peo...
متن کاملAnalysis of Location of Villages in Relation to Rupture Zone (Case Study: North Qazvin Fault)
This paper studies the shear zone of North Qazvin fault and investigates the location of rural settlements in this area. In selected sections, the presence of transverse valleys along the fault made it possible to investigate the evidence of shear zones in which we can see severe crushing in igneous rocks of andesitic and trachyandesitic type, and cataclastic. Moreover, traces of faulted and fr...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- American journal of epidemiology
دوره 174 1 شماره
صفحات -
تاریخ انتشار 2011