Validation of exposure assessment and assessment of recruitment methods for a prospective cohort study of mobile phone users (COSMOS) in Finland: a pilot study |
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| Authors: | Sirpa Heinävaara Kari Tokola Päivi Kurttio Anssi Auvinen |
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| Affiliation: | (1) Radiation and Nuclear Safety Authority, Research and Environmental Surveillance, Health Risks and Radon Safety, Laippatie 4, 00880 Helsinki, Finland;(2) Tampere School of Public Health, University of Tampere, 33014 Helsinki, Finland |
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| Abstract: | Background The aim of the study was to evaluate the agreement between self-reported and operator-derived estimates of call time based on a three-month monitoring period, as well as the consistency of mobile phone use over time. Alternative approaches to improve participation in a cohort study of mobile phone users were also compared. |
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