Study type:
Epidemiological study
(observational study)
Use of mobile phone during pregnancy and the risk of spontaneous abortion
epidem.
By:
Mahmoudabadi FS, Ziaei S, Firoozabadi M, Kazemnejad A
Published in: J Environ Health Sci Eng 2015; 13: 34
Aim of study (acc. to author)
Endpoint/type of risk estimation
Exposure
Assessment
- questionnaire: average calling time per day based on bills, location of mobile phone when not in use (in handbags, clothing pockets, ≥ 60-70 cm away from the body), use of hands-free equipment, use of phones for other applications (to send messages, to listen to music, and to play games)
- calculation: effective SAR calculated as average duration of calling time per day multiplied with SAR reported by the manufacturer
Population
-
Group:
-
Age:
18–35 years
-
Observation period:
not stated
-
Study location:
Iran (Tehran)
Case group
Control group
Study size
|
Cases |
Controls |
| Eligible |
292 |
308 |
| Evaluable |
226 |
246 |
Statistical analysis method:
- logistic regression
- Chi-square test
- t-test
(
adjustment:
)
Results (acc. to author)
All data pertaining to mobile phone use such as average calling time per day, the location of the mobile phones when not in use, use of phones for other applications, SAR and the average of the calculated effective SAR, except the use of hands-free devices were different between the case group and the control group. A significant association between the calculated effective SAR and the risk of spontaneous abortions was observed (OR 1.11; CI 1.07-1.16).
The results suggest that use of mobile phones could be related to the early spontaneous abortions.
Limitations (acc. to author)
Study funded by
-
Tarbiat Modares University, Tehran, Iran
Related articles
-
Zhou LY et al.
(2017):
Epidemiological investigation of risk factors of the pregnant women with early spontaneous abortion in Beijing
-
Abad M et al.
(2016):
Association between electromagnetic field exposure and abortion in pregnant women living in Tehran
-
Tan TC et al.
(2014):
Lifestyle Risk Factors Associated with Threatened Miscarriage: A Case-Control Study
-
Shamsi Mahmoudabadi F et al.
(2013):
Exposure to extremely low frequency electromagnetic fields during pregnancy and the risk of spontaneous abortion: a case-control study
