Browsing by Author "Cardis, E"
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- Item[Cell Phones and Risk of brain and acoustic nerve tumours: the French INTERPHONE case-control study].(2007-10-15) Hours, M; Bernard, M; Montestrucq, L; Arslan, M; Bergeret, A; Deltour, I; Cardis, EUse of cell phones has increased dramatically since 1992 when they were first introduced in France Certain electromagnetic fields at extremely low frequency have been recognized as possibly carcinogenic by the International Agency for Research on Cancer Given the use of radiofrequency technology in cell phones the rapid increase in the number of cell phones has generated concerns about the existence of a potential health hazard To evaluate the relationship between the use of cell phones and the development of tumors of the head a multicentric international study INTERPHONE coordinated by the International Agency for Research on Cancer was carried out in 13 countries This publication reports the results of the French part of the INTERPHONE study
- ItemDeterminants of mobile phone output power in a multinational study: implications for exposure assessment.(2009-09-22) Vrijheid, M; Mann, S; Vecchia, P; Wiart, J; Taki, M; Ardoino, L; Armstrong, B K; Auvinen, A; Bédard, D; Berg-Beckhoff, G; Brown, J; Chetrit, A; Collatz-Christensen, H; Combalot, E; Cook, A; Deltour, I; Feychting, M; Giles, G G; Hepworth, S J; Hours, M; Iavarone, I; Johansen, C; Krewski, D; Kurttio, P; Lagorio, S; Lönn, S; McBride, M; Montestrucq, L; Parslow, R C; Sadetzki, S; Schüz, J; Tynes, T; Woodward, A; Cardis, EThe output power of a mobile phone is directly related to its radiofrequency RF electromagnetic field strength and may theoretically vary substantially in different networks and phone use circumstances due to power control technologies To improve indices of RF exposure for epidemiological studies we assessed determinants of mobile phone output power in a multinational study
- ItemDistribution of RF energy emitted by mobile phones in anatomical structures of the brain.(2008-05-23) Cardis, E; Deltour, I; Mann, S; Moissonnier, M; Taki, M; Varsier, N; Wake, K; Wiart, JThe rapid worldwide increase in mobile phone use in the last decade has generated considerable interest in possible carcinogenic effects of radio frequency RF Because exposure to RF from phones is localized if a risk exists it is likely to be greatest for tumours in regions with greatest energy absorption The objective of the current paper was to characterize the spatial distribution of RF energy in the brain using results of measurements made in two laboratories on 110 phones used in Europe or Japan Most 97 99 depending on frequency appears to be absorbed in the brain hemisphere on the side where the phone is used mainly 50 60 in the temporal lobe The average relative SAR is highest in the temporal lobe 6 15 depending on frequency of the spatial peak SAR in the most exposed region of the brain and the cerebellum 2 10 and decreases very rapidly with increasing depth particularly at higher frequencies The SAR distribution appears to be fairly similar across phone models between older and newer phones and between phones with different antenna types and positions Analyses of risk by location of tumour are therefore important for the interpretation of results of studies of brain tumours in relation to mobile phone use
- ItemEstimation of RF energy absorbed in the brain from mobile phones in the Interphone Study.(2011-08-12) Cardis, E; Varsier, N; Bowman, J D; Deltour, I; Figuerola, J; Mann, S; Moissonnier, M; Taki, M; Vecchia, P; Villegas, R; Vrijheid, M; Wake, K; Wiart, JThe objective of this study was to develop an estimate of a radio frequency RF dose as the amount of mobile phone RF energy absorbed at the location of a brain tumour for use in the Interphone Epidemiological Study
- ItemMobile phone use and risk of acoustic neuroma: results of the Interphone case-control study in five North European countries.(2005-09-28) Schoemaker, M J; Swerdlow, A J; Ahlbom, A; Auvinen, A; Blaasaas, K G; Cardis, E; Christensen, H Collatz; Feychting, M; Hepworth, S J; Johansen, C; Klaeboe, L; Lönn, S; McKinney, P A; Muir, K; Raitanen, J; Salminen, T; Thomsen, J; Tynes, TThere is public concern that use of mobile phones could increase the risk of brain tumours If such an effect exists acoustic neuroma would be of particular concern because of the proximity of the acoustic nerve to the handset We conducted to a shared protocol six population based case control studies in four Nordic countries and the UK to assess the risk of acoustic neuroma in relation to mobile phone use Data were collected by personal interview from 678 cases of acoustic neuroma and 3553 controls The risk of acoustic neuroma in relation to regular mobile phone use in the pooled data set was not raised odds ratio OR 0 9 95 confidence interval CI 0 7 1 1 There was no association of risk with duration of use lifetime cumulative hours of use or number of calls for phone use overall or for analogue or digital phones separately Risk of a tumour on the same side of the head as reported phone use was raised for use for 10 years or longer OR 1 8 95 CI 1 1 3 1 The study suggests that there is no substantial risk of acoustic neuroma in the first decade after starting mobile phone use However an increase in risk after longer term use or after a longer lag period could not be ruled out
- ItemResidential exposure to radiofrequency fields from mobile phone base stations, and broadcast transmitters: a population-based survey with personal meter.(2009-07-20) Viel, J F; Clerc, S; Barrera, C; Rymzhanova, R; Moissonnier, M; Hours, M; Cardis, EBoth the public perceptions and most published epidemiologic studies rely on the assumption that the distance of a particular residence from a base station or a broadcast transmitter is an appropriate surrogate for exposure to radiofrequency fields although complex propagation characteristics affect the beams from antennas The main goal of this study was to characterise the distribution of residential exposure from antennas using personal exposure meters
- ItemRisk of brain tumours in relation to estimated RF dose from mobile phones: results from five Interphone countries.(2011-08-12) Cardis, E; Armstrong, B K; Bowman, J D; Giles, G G; Hours, M; Krewski, D; McBride, M; Parent, M E; Sadetzki, S; Woodward, A; Brown, J; Chetrit, A; Figuerola, J; Hoffmann, C; Jarus-Hakak, A; Montestruq, L; Nadon, L; Richardson, L; Villegas, R; Vrijheid, MThe objective of this study was to examine the associations of brain tumours with radio frequency RF fields from mobile phones
- ItemValidation of short term recall of mobile phone use for the Interphone study.(2006-03-24) Vrijheid, M; Cardis, E; Armstrong, B K; Auvinen, A; Berg, G; Blaasaas, K G; Brown, J; Carroll, M; Chetrit, A; Christensen, H C; Deltour, I; Feychting, M; Giles, G G; Hepworth, S J; Hours, M; Iavarone, I; Johansen, C; Klaeboe, L; Kurttio, P; Lagorio, S; Lönn, S; McKinney, P A; Montestrucq, L; Parslow, R C; Richardson, L; Sadetzki, S; Salminen, T; Schüz, J; Tynes, T; Woodward, A; ,AIM To validate short term recall of mobile phone use within Interphone an international collaborative case control study of tumours of the brain acoustic nerve and salivary glands related to mobile telephone use METHODS Mobile phone use of 672 volunteers in 11 countries was recorded by operators or through the use of software modified phones and compared to use recalled six months later using the Interphone study questionnaire Agreement between recalled and actual phone use was analysed using both categorical and continuous measures of number and duration of phone calls RESULTS Correlations between recalled and actual phone use were moderate to high ranging from 0 5 to 0 8 across countries and of the same order for number and duration of calls The kappa statistic demonstrated fair to moderate agreement for both number and duration of calls weighted kappa ranging from 0 20 to 0 60 across countries On average subjects underestimated the number of calls per month geometric mean ratio of recalled to actual 0 92 95 CI 0 85 to 0 99 whereas duration of calls was overestimated geometric mean ratio 1 42 95 CI 1 29 to 1 56 The ratio of recalled to actual use increased with level of use showing underestimation in light users and overestimation in heavy users There was substantial heterogeneity in this ratio between countries Inter individual variation was also large and increased with level of use CONCLUSIONS Volunteer subjects recalled their recent phone use with moderate systematic error and substantial random error This large random error can be expected to reduce the power of the Interphone study to detect an increase in risk of brain acoustic nerve and parotid gland tumours with increasing mobile phone use if one exists