Ontology highlight
ABSTRACT:
Materials and methods: The study included Swedish (n = 21,049) and Finnish (n = 3120) participants enrolled in the Cohort Study of Mobile Phone Use and Health (COSMOS) with information about operator-recorded mobile phone use at baseline and sleep outcomes both at baseline and at the 4-year follow-up. Sleep disturbance, sleep adequacy, daytime somnolence, sleep latency, and insomnia were assessed using the Medical Outcome Study (MOS) sleep questionnaire.
Results: Operator-recorded mobile phone use at baseline was not associated with most of the sleep outcomes. For insomnia, an odds ratio (OR) of 1.24, 95% CI 1.03-1.51 was observed in the highest decile of mobile phone call-time (>258 min/week). With weights assigned to call-time to account for the lower RF-EMF exposure from Universal Mobile Telecommunications Service (UMTS, 3G) than from Global System for Mobile Communications (GSM, 2G) the OR was 1.09 (95% CI 0.89-1.33) in the highest call-time decile.
Conclusion: Insomnia was slightly more common among mobile phone users in the highest call-time category, but adjustment for the considerably lower RF-EMF exposure from the UMTS than the GSM network suggests that this association is likely due to other factors associated with mobile phone use than RF-EMF. No association was observed for other sleep outcomes. In conclusion, findings from this study do not support the hypothesis that RF-EMF from mobile phone use has long-term effects on sleep quality.
SUBMITTER: Tettamanti G
PROVIDER: S-EPMC7272128 | biostudies-literature | 2020 Jul
REPOSITORIES: biostudies-literature
Tettamanti Giorgio G Auvinen Anssi A Åkerstedt Torbjörn T Kojo Katja K Ahlbom Anders A Heinävaara Sirpa S Elliott Paul P Schüz Joachim J Deltour Isabelle I Kromhout Hans H Toledano Mireille B MB Poulsen Aslak Harbo AH Johansen Christoffer C Vermeulen Roel R Feychting Maria M Hillert Lena L
Environment international 20200408
<h4>Background</h4>Effects of radiofrequency electromagnetic field exposure (RF-EMF) from mobile phone use on sleep quality has mainly been investigated in cross-sectional studies. The few previous prospective cohort studies found no or inconsistent associations, but had limited statistical power and short follow-up. In this large prospective cohort study, our aim was to estimate the effect of RF-EMF from mobile phone use on different sleep outcomes.<h4>Materials and methods</h4>The study includ ...[more]