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Deltour I, Poulsen AH, Johansen C, Feychting M, Johannesen TB, Auvinen A, Schüz J. Time trends in mobile phone use and glioma incidence among males in the Nordic Countries, 1979-2016. ENVIRONMENT INTERNATIONAL 2022; 168:107487. [PMID: 36041243 PMCID: PMC9463632 DOI: 10.1016/j.envint.2022.107487] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 08/07/2022] [Accepted: 08/22/2022] [Indexed: 06/15/2023]
Abstract
INTRODUCTION In the Nordic countries, the use of mobile phones increased sharply in the mid-1990s especially among middle-aged men. We investigated time trends in glioma incidence rates (IR) with the perspective to inform about the plausibility of brain tumour risks from mobile phone use reported in some case-control studies. METHODS We analysed IR of glioma in Denmark, Finland, Norway, and Sweden among men aged 40-69 years, using data from national cancer registries and population statistics during 1979-2016, using log-linear joinpoint analysis. Information on regular mobile phone use and amount of call-time was obtained from major studies of mobile phones in these countries. We compared annual observed incidence with that expected under various risk scenarios to assess which of the reported effect sizes are compatible with the observed IR. The expected numbers of cases were computed accounting for an impact of other factors besides mobile phone use, such as improved cancer registration. RESULTS Based on 18,232 glioma cases, IR increased slightly but steadily with a change of 0.1% (95 %CI 0.0%; 0.3%) per year during 1979-2016 among 40-59-year-old men and for ages 60-69, by 0.6 % (95 %CI 0.4; 0.9) annually. The observed IR trends among men aged 40-59 years were incompatible with risk ratios (RR) 1.08 or higher with a 10-year lag, RR ≥ 1.2 with 15-year lag and RR ≥ 1.5 with 20-year lag. For the age group 60-69 years, corresponding effect sizes RR ≥ 1.4, ≥2 and ≥ 2.5 could be rejected for lag times 10, 15 and 20 years. DISCUSSION This study confirms and reinforces the conclusions that no changes in glioma incidence in the Nordic countries have occurred that are consistent with a substantial risk attributable to mobile phone use. This particularly applies to virtually all reported risk increases reported by previous case-control studies with positive findings.
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Affiliation(s)
- Isabelle Deltour
- Environment and Lifestyle Epidemiology Branch, International Agency for Research on Cancer, Lyon, France.
| | | | | | - Maria Feychting
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | | | - Anssi Auvinen
- Tampere University, Faculty of Social Sciences, Tampere, Finland; STUK - Radiation and Nuclear Safety Authority, Vantaa, Finland
| | - Joachim Schüz
- Environment and Lifestyle Epidemiology Branch, International Agency for Research on Cancer, Lyon, France
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Lagorio S, Blettner M, Baaken D, Feychting M, Karipidis K, Loney T, Orsini N, Röösli M, Paulo MS, Elwood M. The effect of exposure to radiofrequency fields on cancer risk in the general and working population: A protocol for a systematic review of human observational studies. ENVIRONMENT INTERNATIONAL 2021; 157:106828. [PMID: 34433115 PMCID: PMC8484862 DOI: 10.1016/j.envint.2021.106828] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 08/12/2021] [Accepted: 08/13/2021] [Indexed: 05/13/2023]
Abstract
BACKGROUND The World Health Organization (WHO) has an ongoing project to assess potential health effects of exposure to radiofrequency electromagnetic fields (RF-EMF) in the general and working population. Here we present the protocol for a systematic review of the scientific literature on cancer hazards from exposure to RF-EMF in humans, commissioned by the WHO as part of that project. OBJECTIVE To assess the quality and strength of the evidence provided by human observational studies for a causal association between exposure to RF-EMF and risk of neoplastic diseases. ELIGIBILITY CRITERIA We will include cohort and case-control studies investigating neoplasia risks in relation to three types of exposure to RF-EMF: near-field, head-localized, exposure from wireless phone use (SR-A); far-field, whole body, environmental exposure from fixed-site transmitters (SR-B); near/far-field occupational exposures from use of handheld transceivers or RF-emitting equipment in the workplace (SR-C). While no restriction on tumour type will be applied, we will focus on selected neoplasms of the central nervous system (brain, meninges, pituitary gland, acoustic nerve) and salivary gland tumours (SR-A); brain tumours and leukaemias (SR-B, SR-C). INFORMATION SOURCES Eligible studies will be identified through Medline, Embase, and EMF-Portal. RISK-OF-BIAS ASSESSMENT We will use a tailored version of the OHAT's tool to evaluate the study's internal validity. DATA SYNTHESIS We will consider separately studies on different tumours, neoplasm-specific risks from different exposure sources, and a given exposure-outcome pair in adults and children. When a quantitative synthesis of findings can be envisaged, the main aims of the meta-analysis will be to assess the strength of association and the shape of the exposure-response relationship; to quantify the degree of heterogeneity across studies; and explore the sources of inconsistency (if any). When a meta-analysis is judged inappropriate, we will perform a narrative synthesis, complemented by a structured tabulation of results and appropriate visual displays. EVIDENCE ASSESSMENT Confidence in evidence will be assessed in line with the GRADE approach. FUNDING This project is supported by the World Health Organization. Co-financing was provided by the New Zealand Ministry of Health; the Istituto Superiore di Sanità in its capacity as a WHO Collaborating Centre for Radiation and Health; ARPANSA as a WHO Collaborating Centre for Radiation Protection. REGISTRATION PROSPERO CRD42021236798.
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Affiliation(s)
- Susanna Lagorio
- Department of Oncology and Molecular Medicine, National Institute of Health (Istituto Superiore di Sanità), Rome, Italy.
| | - Maria Blettner
- Institute of Medical Biostatistics, Epidemiology and Informatics (IMBEI), University of Mainz, Germany.
| | - Dan Baaken
- Institute of Medical Biostatistics, Epidemiology and Informatics (IMBEI), University of Mainz, Germany.
| | - Maria Feychting
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
| | - Ken Karipidis
- Australian Radiation Protection and Nuclear Safety Agency (ARPANSA), Yallambie, VIC, Australia.
| | - Tom Loney
- College of Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, United Arab Emirates.
| | - Nicola Orsini
- Department of Global Public Health, Karolinska Institutet, Stockholm, Sweden.
| | - Martin Röösli
- Swiss Tropical and Public Health Institute, Basel, Switzerland; University of Basel, Basel, Switzerland.
| | - Marilia Silva Paulo
- Institute of Public Health, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, United Arab Emirates.
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Sato Y, Kojimahara N, Yamaguchi N. Simulation of the incidence of malignant brain tumors in birth cohorts that started using mobile phones when they first became popular in Japan. Bioelectromagnetics 2019; 40:143-149. [PMID: 30875091 DOI: 10.1002/bem.22176] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Accepted: 02/15/2019] [Indexed: 11/09/2022]
Abstract
Over 20 years have passed since the initial spread of mobile phones in Japan. Epidemiological studies of mobile phone use are currently being conducted around the world, but scientific evidence is inconclusive. The present study aimed to simulate the incidence of malignant brain tumors in cohorts that began using mobile phones when they first became popular in Japan. Mobile phone ownership data were collected through an Internet-based questionnaire survey of subjects born between 1960 and 1989. The proportion of mobile phone ownership between 1990 and 2012 was calculated by birth cohort (1960s, 1970s, and 1980s). Subsequently, using the ownership proportion, the incidence of malignant brain tumors was calculated under simulated risk conditions. When the relative risk was set to 1.4 for 1,640 h or more of cumulative mobile phone use and the mean daily call duration was 15 min, the incidence of malignant brain tumors in 2020 was 5.48 per 100,000 population for the 1960s birth cohort, 3.16 for the 1970s birth cohort, and 2.29 for the 1980s birth cohort. Under the modeled scenarios, an increase in the incidence of malignant brain tumors was shown to be observed around 2020. © 2019 Bioelectromagnetics Society.
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Affiliation(s)
- Yasuto Sato
- Department of Public Health, School of Medicine, Tokyo Women's Medical University, Tokyo, Japan
| | - Noriko Kojimahara
- Department of Public Health, School of Medicine, Tokyo Women's Medical University, Tokyo, Japan
| | - Naohito Yamaguchi
- Department of Public Health, School of Medicine, Tokyo Women's Medical University, Tokyo, Japan
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Abstract
PURPOSE OF REVIEW As a group, benign tumors account for the majority of primary neoplasms affecting the central nervous system (CNS). This article reviews the epidemiology, clinical presentation, neuroimaging features, and management of the most common of these tumors: meningiomas, schwannomas, and pituitary adenomas. RECENT FINDINGS Awareness of the most common nonmalignant tumors of the CNS and their management guidelines is important as many of these tumors are managed conservatively, with neurologists playing a primary role in both surveillance and symptom management. Knowledge of the varied neurologic consequences of these tumors allows optimizing interventions that improve quality of life in people living with these tumors without incurring treatment-related complications. Awareness of the clinical features that require surgery, radiation therapy, or chemotherapy is imperative. Finally, important discoveries in both germline and somatic mutations underlying some of these lesions have contributed to the launch of several novel drug trials for these tumors. SUMMARY As a group, nonmalignant neoplasms are the most common neoplasms affecting the CNS in adults. Because of their unique neuroanatomic location or containment within the bony skull, these histologically benign lesions can cause significant neurologic morbidity. Management with a multidisciplinary team that includes neurologists, neuro-oncologists, radiologists, neurosurgeons, radiation oncologists, otolaryngologists, pathologists, neuropsychologists, physiatrists, and others is necessary for the optimal management of these lesions.
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Toledano MB, Auvinen A, Tettamanti G, Cao Y, Feychting M, Ahlbom A, Fremling K, Heinävaara S, Kojo K, Knowles G, Smith RB, Schüz J, Johansen C, Poulsen AH, Deltour I, Vermeulen R, Kromhout H, Elliott P, Hillert L. An international prospective cohort study of mobile phone users and health (COSMOS): Factors affecting validity of self-reported mobile phone use. Int J Hyg Environ Health 2018; 221:1-8. [PMID: 29056311 DOI: 10.1016/j.ijheh.2017.09.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 09/14/2017] [Accepted: 09/18/2017] [Indexed: 12/23/2022]
Abstract
This study investigates validity of self-reported mobile phone use in a subset of 75 993 adults from the COSMOS cohort study. Agreement between self-reported and operator-derived mobile call frequency and duration for a 3-month period was assessed using Cohen's weighted Kappa (κ). Sensitivity and specificity of both self-reported high (≥10 calls/day or ≥4h/week) and low (≤6 calls/week or <30min/week) mobile phone use were calculated, as compared to operator data. For users of one mobile phone, agreement was fair for call frequency (κ=0.35, 95% CI: 0.35, 0.36) and moderate for call duration (κ=0.50, 95% CI: 0.49, 0.50). Self-reported low call frequency and duration demonstrated high sensitivity (87% and 76% respectively), but for high call frequency and duration sensitivity was lower (38% and 56% respectively), reflecting a tendency for greater underestimation than overestimation. Validity of self-reported mobile phone use was lower in women, younger age groups and those reporting symptoms during/shortly after using a mobile phone. This study highlights the ongoing value of using self-report data to measure mobile phone use. Furthermore, compared to continuous scale estimates used by previous studies, categorical response options used in COSMOS appear to improve validity considerably, most likely by preventing unrealistically high estimates from being reported.
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Affiliation(s)
- Mireille B Toledano
- MRC-PHE Centre for Environment and Health, Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, Norfolk Place, London, W2 1PG, UK; National Institute for Health Research Health Protection Research Unit (NIHR HPRU) in Health Impact of Environmental Hazards, School of Public Health, Imperial College London, Norfolk Place, London, W2 1PG, UK.
| | - Anssi Auvinen
- School of Health Sciences, University of Tampere, FI-33014, Tampere, Finland; Radiation and Nuclear Safety Authority (STUK), 00811 Helsinki, Finland
| | - Giorgio Tettamanti
- Institute of Environmental Medicine, Karolinska Institutet, SE-171 77 Stockholm, Sweden
| | - Yang Cao
- Institute of Environmental Medicine, Karolinska Institutet, SE-171 77 Stockholm, Sweden; Clinical Epidemiology and Biostatistics, School of Medical Sciences, Örebro University, SE-701 82 Örebro, Sweden
| | - Maria Feychting
- Institute of Environmental Medicine, Karolinska Institutet, SE-171 77 Stockholm, Sweden
| | - Anders Ahlbom
- Institute of Environmental Medicine, Karolinska Institutet, SE-171 77 Stockholm, Sweden
| | - Karin Fremling
- Institute of Environmental Medicine, Karolinska Institutet, SE-171 77 Stockholm, Sweden
| | - Sirpa Heinävaara
- Finnish Cancer Registry, Mass Screening Registry, Unioninkatu 22, FI-00130 Helsinki, Finland
| | - Katja Kojo
- Radiation and Nuclear Safety Authority (STUK), 00811 Helsinki, Finland
| | - Gemma Knowles
- MRC-PHE Centre for Environment and Health, Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, Norfolk Place, London, W2 1PG, UK; National Institute for Health Research Health Protection Research Unit (NIHR HPRU) in Health Impact of Environmental Hazards, School of Public Health, Imperial College London, Norfolk Place, London, W2 1PG, UK
| | - Rachel B Smith
- MRC-PHE Centre for Environment and Health, Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, Norfolk Place, London, W2 1PG, UK; National Institute for Health Research Health Protection Research Unit (NIHR HPRU) in Health Impact of Environmental Hazards, School of Public Health, Imperial College London, Norfolk Place, London, W2 1PG, UK
| | - Joachim Schüz
- International Agency for Research on Cancer (IARC), Section of Environment and Radiation, 69372 Lyon, France
| | - Christoffer Johansen
- Oncology clinic, Finsen Center, Copenhagen, Denmark; The Danish Cancer Society Research Center, DK-2100 Copenhagen, Denmark
| | | | - Isabelle Deltour
- International Agency for Research on Cancer (IARC), Section of Environment and Radiation, 69372 Lyon, France
| | - Roel Vermeulen
- Institute for Risk Assessment Sciences, Utrecht University, 3508 TD Utrecht, The Netherlands
| | - Hans Kromhout
- Institute for Risk Assessment Sciences, Utrecht University, 3508 TD Utrecht, The Netherlands
| | - Paul Elliott
- MRC-PHE Centre for Environment and Health, Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, Norfolk Place, London, W2 1PG, UK; National Institute for Health Research Health Protection Research Unit (NIHR HPRU) in Health Impact of Environmental Hazards, School of Public Health, Imperial College London, Norfolk Place, London, W2 1PG, UK
| | - Lena Hillert
- Institute of Environmental Medicine, Karolinska Institutet, SE-171 77 Stockholm, Sweden; Centre for Occupational and Environmental Medicine, Stockholm County Council, 104 22 Stockholm, Sweden
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