Browsing by Author "Auvinen, A"
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- 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
- ItemMeningioma and mobile phone use--a collaborative case-control study in five North European countries.(2008-12-02) Lahkola, A; Salminen, T; Raitanen, J; Heinävaara, S; Schoemaker, M J; Christensen, H Collatz; Feychting, M; Johansen, C; Klaeboe, L; Lönn, S; Swerdlow, A J; Tynes, T; Auvinen, AUse of mobile telephones has been suggested as a possible risk factor for intracranial tumours To evaluate the effect of mobile phones on risk of meningioma we carried out an international collaborative case control study of 1209 meningioma cases and 3299 population based controls
- 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
- 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