Study type: Epidemiological study (observational study)

A Challenging Issue in the Etiology of Speech Problems: The Effect of Maternal Exposure to Electromagnetic Fields on Speech Problems in the Offspring epidem.

Published in: J Biomed Phys Eng 2015; 5 (3): 151-154

Aim of study (acc. to author)

A study was conducted in Iran to investigate a possible association between maternal exposure to electromagnetic field and speech problems in the offspring.

Further details

Remark EMF-Portal: It is not stated in the publication how speech problems of the children were defined and evaluated. Different exposure sources are listed in the abstract and the result section. The number of children with and without speech problems in the different exposure groups is not given. Due to the missing data it is not possible to retrace the results of the study.

Endpoint/type of risk estimation

Type of risk estimation:



Case group

Control group

Study size

Cases Controls
Eligible 77 35

Results (acc. to author)

The authors found a significant association between either the call time or history of maternal mobile phone use (months used) and speech problems in the offspring. Other exposures had no effect on the occurrence of speech problems.
The authors conclude that despite the relatively small sample size this study indicates that the maternal exposure to mobile phones can affect the occurrence of speech problems in the offspring.

Study funded by

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