Study type:
Epidemiological study
(observational study)
Maternal cumulative exposure to extremely low frequency electromagnetic fields and pregnancy outcomes in the Elfe cohort
epidem.
By:
Migault L, Piel C, Carles C, Delva F, Lacourt A, Cardis E, Zaros C, de Seze R, Baldi I, Bouvier G
Published in: Environ Int 2018; 112: 165-173
Aim of study (acc. to author)
Endpoint/type of risk estimation
Exposure
Assessment
- questionnaire: present or last occupation, job status during pregnancy, start of maternity leave, parental occupation during pregnancy, maternal main job duties and tasks, the industry and the employer name and address
- job exposure matrix: based on INTEROCC JEM (Turner et al. (2014)), including 5 nonprofessional situations (housewife, student, unemployed, retired, prisoner)
- calculation: summation of the daily exposure in the first 231 days of gestation (equivalent to 33 first weeks of gestation) results in the cumulative exposure in µT-days
Exposure groups
|
Group
|
Description
|
|
Reference group 1
|
cumulative exposure: < 17.5 µT-days
|
|
Group 2
|
cumulative exposure: 17.5 - 23.8 µT-days
|
|
Group 3
|
cumulative exposure: 23.8 - 36.2 µT-days
|
|
Group 4
|
cumulative exposure: 36.2 - 61.6 µT-days
|
|
Group 5
|
cumulative exposure: ≥ 61.6 µT-days (90th percentile)
|
|
Reference group 6
|
cumulative exposure: < 44.1 µT-days
|
|
Group 7
|
cumulative exposure: ≥ 44.1 µT-days
|
Population
-
Group:
- women
- children in utero
- newborns
-
Characteristics:
mothers enrolled in a prospective birth cohort (Elfe study), infants born at 33 weeks of gestation or more
-
Observation period:
2011, follow-up at the child's age of 2 months
-
Study location:
France
-
Data source:
Elfe study
-
Exclusion criteria:
multiple births, mothers under age 18, unable to give informed consent, or who intended to move abroad within three years
Study size
| Type |
Value |
| Participants |
16,733 |
| Evaluable |
16,717 |
Statistical analysis method:
(
adjustment:
)
Results (acc. to author)
Study funded by
-
Agence Nationale de Sécurité Sanitaire de l'Alimentation, de l'Environnement et du Travail (ANSES; French Agency for Food, Environmental and Occupational Health & Safety), France
-
Ministère délégué à l'Enseignement supérieur et à la Recherche (Ministry of National Education and Research), France
Related articles
-
Migault L et al.
(2020):
Maternal cumulative exposure to extremely low frequency electromagnetic fields, prematurity and small for gestational age: a pooled analysis of two birth cohorts
-
Sadeghi T et al.
(2017):
Preterm birth among women living within 600 meters of high voltage overhead Power Lines: a case-control study
-
Eskelinen T et al.
(2016):
Maternal exposure to extremely low frequency magnetic fields: Association with time to pregnancy and foetal growth
-
de Vocht F et al.
(2014):
Maternal residential proximity to sources of extremely low frequency electromagnetic fields and adverse birth outcomes in a UK cohort
-
Col-Araz N
(2013):
Evaluation of factors affecting birth weight and preterm birth in southern Turkey
-
Mahram M et al.
(2013):
The effect of extremely low frequency electromagnetic fields on pregnancy and fetal growth and development
-
Auger N et al.
(2011):
The relationship between residential proximity to extremely low frequency power transmission lines and adverse birth outcomes
-
Grajewski B et al.
(1997):
Work with video display terminals and the risk of reduced birthweight and preterm birth
-
Bracken MB et al.
(1995):
Exposure to electromagnetic fields during pregnancy with emphasis on electrically heated beds: association with birthweight and intrauterine growth retardation
-
Savitz DA et al.
(1994):
Residential magnetic fields, wire codes, and pregnancy outcome
-
Nielsen CV et al.
(1992):
Fetal growth, preterm birth and infant mortality in relation to work with video display terminals during pregnancy
