Exposure induced by WCDMA mobiles phones in operating networks

Gati, Azeddine; Hadjem, Abdelhamid; Wong, M.F.; Wiart, Joe

doi:10.1109/twc.2009.12.080758

Cited by 58 publications

(61 citation statements)

References 7 publications

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“…For each of the considered exposure circumstances, average specific absorption rates (SAR) for the brain and the whole body were derived from the literature (Gati et al 2009;Hadjem et al 2010;Huang et al 2014;Lauer et al 2013;Persson et al 2012;SEAWIND 2013;Vrijheid et al 2009). To obtain a cumulative daily brain and whole body dose for each study participant, the SAR values were multiplied by the average exposure duration per day for each exposure situation and summed up to one single brain and whole body dose measure.…”

Section: Rf-emf Dose Measuresmentioning

confidence: 99%

Mobile phone use, behavioural problems and concentration capacity in adolescents: A prospective study

Roser

Schoeni

Röösli

2016

International Journal of Hygiene and Environmental Health

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Section: Rf-emf Dose Measuresmentioning

confidence: 99%

Mobile phone use, behavioural problems and concentration capacity in adolescents: A prospective study

Roser

Schoeni

Röösli

2016

International Journal of Hygiene and Environmental Health

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“…For each of these exposure situations, specific absorption rates (SAR) for the brain and the whole body were obtained from the literature (Gati et al 2009;Hadjem et al 2010;Huang et al 2014;Lauer et al 2013;Persson et al 2012;SEAWIND 2013;Vrijheid et al 2009). To obtain a brain and whole body dose for each study participant the obtained SAR values were multiplied by the average exposure duration per day for each exposure situation and summed up to one single brain and whole body dose.…”

Section: Rf-emf Dose Measuresmentioning

confidence: 99%

“…One major factor determining RF-EMF exposure is the type of network used to make a mobile phone call. Calls on the UMTS network cause on average 100-500 times less exposure than calls on the GSM network (Gati et al 2009). This implies that cumulative RF-EMF exposure is not just a function of the duration of mobile phone use.…”

Section: Introductionmentioning

confidence: 99%

Memory performance, wireless communication and exposure to radiofrequency electromagnetic fields: A prospective cohort study in adolescents

Schoeni

Roser

Röösli

2015

Environment International

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BackgroundThe aim of this study is to investigate whether memory performance in adolescents is affected by radiofrequency electromagnetic fields (RF-EMF) from wireless device use or by the wireless device use itself due to non-radiation related factors in that context. MethodsWe conducted a prospective cohort study with 439 adolescents. Verbal and figural memory tasks at baseline and after one year were completed using a standardized, computerized cognitive test battery. Use of wireless devices was inquired by questionnaire and operator recorded mobile phone use data was obtained for a subgroup of 234 adolescents.RF-EMF dose measures considering various factors affecting RF-EMF exposure were computed for the brain and the whole body.Data were analysed using a longitudinal approach, to investigate whether cumulative exposure over one year was related to changes in memory performance. All analyses were adjusted for relevant confounders. ResultsThe kappa coefficients between cumulative mobile phone call duration and RF-EMF brain and whole body dose were 0.62 and 0.67, respectively for the whole sample and 0.48 and 0.28, respectively for the sample with operator data. In linear exposure-response models an interquartile increase in cumulative operator recorded mobile phone call duration was Conclusions 3A change in memory performance over one year was negatively associated with cumulative duration of wireless phone use and more strongly with RF-EMF dose. This may indicate that RF-EMF exposure affects memory performance.

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“…Over the past few decades, cell phone use has rapidly increased, with more users and heavier use, whereas the evolution of cell phone technology has lowered the rate of individual radiofrequency exposure per use. [19][20][21] Overall, there is a strong trend of increasing cell phone use with time, as reflected in the DNBC data set. Prenatal and postnatal cell phone exposures increased dramatically by year, reflecting an increase in use by mothers and children.…”

Section: Discussionmentioning

confidence: 99%

Complexities of sibling analysis when exposures and outcomes change with time and birth order

Sudan

Kheifets

Arah

et al. 2013

J Expo Sci Environ Epidemiol

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In this study, we demonstrate the complexities of performing a sibling analysis with a re-examination of associations between cell phone exposures and behavioral problems observed previously in the Danish National Birth Cohort. Children (52,680; including 5441 siblings) followed up to age 7 were included. We examined differences in exposures and behavioral problems between siblings and non-siblings and by birth order and birth year. We estimated associations between cell phone exposures and behavioral problems while accounting for the random family effect among siblings. The association of behavioral problems with both prenatal and postnatal exposure differed between siblings (odds ratio (OR): 1.07; 95% confidence interval (CI): 0.69-1.66) and non-siblings (OR: 1.54; 95% CI: 1.36-1.74) and within siblings by birth order; the association was strongest for first-born siblings (OR: 1.72; 95% CI: 0.86-3.42) and negative for later-born siblings (OR: 0.63; 95% CI: 0.31-1.25), which may be because of increases in cell phone use with later birth year. Sibling analysis can be a powerful tool for (partially) accounting for confounding by invariant unmeasured within-family factors, but it cannot account for uncontrolled confounding by varying family-level factors, such as those that vary with time and birth order. Keywords: sibling analysis; cellular phone; child; behavior; confounding INTRODUCTION A number of epidemiological studies have shown associations between cell phone exposures and behavioral and cognitive changes in children. Findings have included poorer accuracy of working memory and associative learning, shorter reaction times for simple learning tasks, and longer completion times for Stroop color-word naming tasks in children reporting more cell phone voice calls. 1 Associations between radiofrequency exposure and behavioral problems among adolescents and conduct problems among children were reported in one study. 2 Another more recent study indicated a positive association between cell phone voice calls and attention-deficit hyperactivity symptoms among children with high blood lead levels; however, reverse causation could have produced these results. 3 Conversely, another investigation did not detect an association between prenatal cell phone use and behavioral problems in children, albeit this study was based on a small sample size, particularly a small number of exposed cases. 4 Two analyses conducted among children in the Danish National Birth Cohort (DNBC) by Divan et al. 5,6 in 2008 and 2010 reported associations between prenatal and postnatal cell phone exposures and behavioral problems at age 7. Overall behavioral problems and specific behavioral outcomes were assessed using the Strengths and Difficulties Questionnaire (SDQ). 7 The original analysis included 13,159 children, and reported odds ratios (ORs) for higher overall behavioral problems scores of 1.80 (95% confidence interval (CI): 1.45-2.23) in children with both prenatal and postnatal exposure to cell phones. 5 They also reported associations...

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Exposure induced by WCDMA mobiles phones in operating networks

Cited by 58 publications

References 7 publications

Mobile phone use, behavioural problems and concentration capacity in adolescents: A prospective study

Mobile phone use, behavioural problems and concentration capacity in adolescents: A prospective study

Memory performance, wireless communication and exposure to radiofrequency electromagnetic fields: A prospective cohort study in adolescents

Complexities of sibling analysis when exposures and outcomes change with time and birth order

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