Study type: Epidemiological study (observational study)

The pattern of mobile phone use and prevalence of self-reported symptoms in elementary and junior high school students in Shiraz, Iran. epidem.

Published in: Iran J Med Sci 2011; 36 (2): 96-103

Aim of study (acc. to author)

A cross-sectional study was conducted in Iran to investigate the association between mobile phone use and self-reported subjective symptoms among elementary and junior high school students.

Endpoint/type of risk estimation

Type of risk estimation:

Exposure

Assessment

Exposure groups

Group Description
Group 1 cathode ray tube monitor use
Group 2 cordless phone use
Group 3 mobile phone use
Reference group 4 daily average mobile phone talking time: no use
Group 5 daily average mobile phone talking time: < 10 min
Group 6 daily average mobile phone talking time: > 11 min

Population

Study size

Type Value
Total 469
Evaluable 452
Statistical analysis method:

Conclusion (acc. to author)

Overall, 254 (54.2%) students had used cathode ray tubes, 262 (55.9%) students had used cordless phones, and 142 (31.4%) students had used mobile phones.
Significant associations were found between the duration of mobile phone use and the self-reported symptoms headache, myalgia, palpitation, fatigue, tinnitus, concentration problems, attention problems and nervousness among elementary and junior high school students.

Limitations (acc. to author)

The symptoms were self-reported by the students. Furthermore, given the age and knowledge of the study participants, their understandings about the exact definitions of the symptoms might have affected their answers to the questions asked.

Study funded by

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