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Mobile phones, cordless phones and rates of brain tumors in different age groups in the Swedish National Inpatient Register and the Swedish Cancer Register during 1998-2015.

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Hardell L, Carlberg M. · 2017

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Brain tumor rates increased in Swedish registers from 1998 to 2015 with a joinpoint in 2007, and the authors indicated underreporting to the Cancer Register.

Plain English Summary

Summary written for general audiences

Researchers analyzed brain tumor rates in the Swedish National Inpatient Register and Swedish Cancer Register from 1998 to 2015. The average annual percentage change for brain tumors increased by 2.06% per 100,000 in both genders combined. A joinpoint in 2007 showed a shift from a 0.16% annual change before 2007 to a 4.24% annual change after 2007. The highest increase was in the 20-39 year age group. The authors concluded that underreporting to the Cancer Register means real incidence is higher and trends should be used with caution.

Why This Matters

Brain tumor diagnosis was based on cytology or histopathology in 83% for men and 87% for women in 1980, increasing to 90% in men and 88% in women in 2015. During the same time period CT and MRI imaging techniques were introduced and morphology is not always necessary for diagnosis. If all brain tumors based on clinical diagnosis with CT or MRI had been reported to the Cancer Register, the frequency of diagnoses based on cytology or histology would have decreased in the register. The authors suggested that use of wireless phones should be considered in relation to the change of incidence rates.

Study Details

The aim of this study is to investigate Mobile phones, cordless phones and rates of brain tumors in different age groups in the Swedish National Inpatient Register and the Swedish Cancer Register during 1998-2015.

We used the Swedish Inpatient Register (IPR) to analyze rates of brain tumors of unknown type (D43) ...

Average Annual Percentage Change (AAPC) per 100,000 increased with +2.06%, 95% confidence interval (...

The results indicate underreporting of brain tumor cases to the Cancer Register. The real incidence would be higher. Thus, incidence trends based on the Cancer Register should be used with caution. Use of wireless phones should be considered in relation to the change of incidence rates.

Cite This Study
Hardell L, Carlberg M. (2017). Mobile phones, cordless phones and rates of brain tumors in different age groups in the Swedish National Inpatient Register and the Swedish Cancer Register during 1998-2015. PLoS One. 12(10):e0185461, 2017.
Show BibTeX
@article{l_2017_mobile_phones_cordless_phones_2181,
  author = {Hardell L and Carlberg M.},
  title = {Mobile phones, cordless phones and rates of brain tumors in different age groups in the Swedish National Inpatient Register and the Swedish Cancer Register during 1998-2015.},
  year = {2017},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/28976991/},
}
PubMed: 28976991

Cited By (40 papers)

Quick Questions About This Study

The study used the Swedish National Inpatient Register and the Swedish Cancer Register.
The average annual percentage change increased by 2.06% per 100,000 in both genders combined.
A joinpoint in 2007 showed a shift from a 0.16% annual change before 2007 to a 4.24% annual change after 2007.
The highest average annual percentage change was found in the 20-39 year age group.
The authors indicated underreporting of brain tumor cases to the Cancer Register, meaning the real incidence would be higher and trends should be used with caution.