6,486 Studies Reviewed. 85.2% of Original Studies Found Biological Effects. The Evidence is Clear.
Shield Your Body
Radio Frequency0

Analysis of ear side of mobile phone use in the general population of Japan.

Bioeffects Seen

Sato Y, Kojimahara N, Taki M, Yamaguchi N · 2017

View Original Abstract
Share:

The study found that talk time per call was the only factor significantly associated with ear side preference overall, and in right-handed adults left-ear use was significantly linked to age groups 30-39, 40-49, over 50, and high work-related talk time.

Plain English Summary

Summary written for general audiences

The study aimed to clarify the distribution of ear side of mobile phone use in Japan and factors associated with it. Statistically significant differences were observed only in talk time per call with an odds ratio of 2.17 and a 95% confidence interval of 1.22 to 3.99. In right-handed adults, left-ear use was significantly associated with age groups 30-39 (OR = 2.55; 95% CI: 1.79-3.68), 40-49 (OR = 3.08; 95% CI: 2.15-4.43), over 50 (OR = 1.85; 95% CI: 1.20-2.85), and with work-related talk time of 51-100% (OR = 1.75; 95% CI: 1.21-2.55). The survey included 2,518 children and 1,529 adults who completed an Internet-based survey, and data were analyzed by logistic regression. In children, the analysis focused on right-ear use in right-handed individuals due to dominant-hand tendency.

Why This Matters

The authors believe that future epidemiological studies on mobile phone use can be improved. They suggest considering the trends in mobile phone use identified in this study.

Study Details

This study aimed to clarify the distribution of the ear side of mobile phone use in the general population of Japan and clarify what factors are associated with the ear side of mobile phone use.

Children at elementary and junior high schools (n = 2,518) and adults aged ≥20 years (n = 1,529) com...

Statistically significant differences were observed only in talk time per call (odds ratio (OR) = 2....

We believe that future epidemiological studies on mobile phone use can be improved by considering the trends in mobile phone use identified in this study.

Cite This Study
Sato Y, Kojimahara N, Taki M, Yamaguchi N (2017). Analysis of ear side of mobile phone use in the general population of Japan. Bioelectromagnetics. 2017 Nov 24. doi: 10.1002/bem.22098.
Show BibTeX
@article{y_2017_analysis_of_ear_side_2568,
  author = {Sato Y and Kojimahara N and Taki M and Yamaguchi N},
  title = {Analysis of ear side of mobile phone use in the general population of Japan.},
  year = {2017},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/29171064/},
}
PubMed: 29171064

Quick Questions About This Study

The study aimed to clarify the distribution of ear side of mobile phone use in Japan and factors associated with it.
Talk time per call was the only factor with a statistically significant difference (OR = 2.17; 95% CI: 1.22-3.99).
Age groups 30-39, 40-49, over 50, and work-related talk time of 51-100% were significantly associated with left-ear use in right-handed adults.
The survey included 2,518 children and 1,529 adults.
Data were analyzed using logistic regression.