Study type:
Epidemiological study
(observational study)
Prenatal exposure to cell phone use and neurodevelopment at 14 months
epidem.
By:
Vrijheid M, Martinez D, Forns J, Guxens M, Julvez J, Ferrer M, Sunyer J
Published in: Epidemiology 2010; 21 (2): 259-262
Aim of study (acc. to author)
Further details
Endpoint/type of risk estimation
Exposure
Assessment
Exposure groups
|
Group
|
Description
|
|
Reference group 1
|
cell phone use: none
|
|
Reference group 2
|
cell phone use: 1 call/day
|
|
Group 3
|
cell phone use: 2-4 calls/day
|
|
Group 4
|
cell phone use: ≥ 5 calls/day
|
Population
-
Group:
-
Age:
one year
-
Characteristics:
population-based birth cohort
-
Observation period:
July 2004 - July 2006
-
Study location:
Spain (Sabadell)
-
Data source:
Childhood and Environment Project, Sabadell, Spain
Study size
| Type |
Value |
| Eligible |
1,099 |
| Participants |
657 |
| Participation rate |
60 % |
| Evaluable |
530 |
Statistical analysis method:
- multiple linear regression analysis
- trend test
(
adjustment:
- age
- socioeconomic status
- education, IQ, smoking during pregnancy, passive smoking
)
Results (acc. to author)
11 % of the mothers reported not using a cell phone, 31 % reported one call per day, 45 % between two and four calls per day, and 13 % five calls or more per day. Only small differences in neurodevelopment scores between the children of cell phone users and nonusers were found. There was no trend with the amount of cell phone use within the users.
The authors concluded that the study gave little evidence for an adverse effect of maternal cell phone use during pregnancy on the early neurodevelopment of the offspring.
Study funded by
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