Multiple maternal occupational exposures during pregnancy and newborn size at birth: analysis of the ELFE cohort, a French longitudinal study of children
Abstract
Objective We aimed to study multiple occupational exposures selected using an priori hypothesis as well as small-for-gestational age (SGA), birthweight (BW), and head circumference (HC).
MethodsWe analyzed data from the Étude Longitudinale Française depuis l'Enfance (ELFE) cohort (N=12 851 mother-child pairs with a gestational age >33 weeks). The outcomes of interest were SGA, BW, and HC. Of 47 factors (17 chemical, 8 physical, 4 biological, 12 biomechanical, 3 organizational and 3 psychosocial) to which mothers were exposed in their occupation assessed by job-exposure matrices in this cohort, we included those for which the epidemiological or experimental literature suggests an association with fetal growth. Logistic and linear regression models that included all preselected exposure variables were performed and adjusted for potential confounders. We conducted additional analysis stratified by trimester of pregnancy.
ResultsThe logistic model, which included all preselected variables, reported that -for all women -exposure to ultrafine particles (UFP) increased SGA risk [odds ratio (OR) 1.46, 95% confidence interval (CI) 1.12-1.90] while standing decreased it (OR 0.82, 95% CI 0.67-1.00). Among mothers who stopped working during the first/ second trimester of pregnancy, we found the same SGA risk for UFP; exposure to high strain also increased the risk (OR 1.81, 95% CI 1.18-2.83). Among those who stopped working during the third trimester, exposure to oxygenated solvents increased SGA risk (OR 2.24, 95% CI 1.08-4.41). In the linear model, for all women, there was a decrease in BW (β -34 grams, 95% CI -66--1.1) among those exposed to UFP. For mothers who stopped working during the first/second trimester, exposure to vibration increased BW, while among those who stopped working during the third trimester, exposure to night work increased BW. Exposure to oxygenated solvents decreased HC (β -0.22 cm, 95% CI -0.44-0.00) among all women.
ConclusionThese findings suggest the possible influence of chemical and strenuous factors at work on fetal growth, particularly depending on the trimester in which pregnant mothers stopped working. While the combined assessment of multiple exposures did not reveal clear associations, further studies are needed to explore potential interactions and underlying biological mechanisms.
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BibTeX
@article{tartaglia2026multiple,
title = {{Multiple maternal occupational exposures during pregnancy and newborn size at birth: analysis of the ELFE cohort, a French longitudinal study of children}},
author = {Marie Tartaglia and Kellian Jaunas and Sabyne Audignon-Durand and Marie-Tülin Houot and Maxime Turuban and Nel Roeleveld and Jack Siemiatycki and Marie Noëlle Dufourg and Camille Carles and Corinne Pilorget and Sanni Uuksulainen and Michelle C Turner and Alexis Descatha and Ronan Garlantézec and Fleur Delva},
journal = {Scandinavian Journal of Work, Environment and Health},
year = {2026},
month = may,
doi = {10.5271/sjweh.4289},
url = {https://u-bordeaux.hal.science/hal-05752215v1},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Multiple maternal occupational exposures during pregnancy and newborn size at birth: analysis of the ELFE cohort, a French longitudinal study of children
AU - Marie Tartaglia
AU - Kellian Jaunas
AU - Sabyne Audignon-Durand
AU - Marie-Tülin Houot
AU - Maxime Turuban
AU - Nel Roeleveld
AU - Jack Siemiatycki
AU - Marie Noëlle Dufourg
AU - Camille Carles
AU - Corinne Pilorget
AU - Sanni Uuksulainen
AU - Michelle C Turner
AU - Alexis Descatha
AU - Ronan Garlantézec
AU - Fleur Delva
PY - 2026
DA - 2026/05/14
JO - Scandinavian Journal of Work, Environment and Health
DO - 10.5271/sjweh.4289
UR - https://u-bordeaux.hal.science/hal-05752215v1
AB - Objective We aimed to study multiple occupational exposures selected using an priori hypothesis as well as small-for-gestational age (SGA), birthweight (BW), and head circumference (HC). MethodsWe analyzed data from the Étude Longitudinale Française depuis l'Enfance (ELFE) cohort (N=12 851 mother-child pairs with a gestational age >33 weeks). The outcomes of interest were SGA, BW, and HC. Of 47 factors (17 chemical, 8 physical, 4 biological, 12 biomechanical, 3 organizational and 3 psychosocial) to which mothers were exposed in their occupation assessed by job-exposure matrices in this cohort, we included those for which the epidemiological or experimental literature suggests an association with fetal growth. Logistic and linear regression models that included all preselected exposure variables were performed and adjusted for potential confounders. We conducted additional analysis stratified by trimester of pregnancy. ResultsThe logistic model, which included all preselected variables, reported that -for all women -exposure to ultrafine particles (UFP) increased SGA risk [odds ratio (OR) 1.46, 95% confidence interval (CI) 1.12-1.90] while standing decreased it (OR 0.82, 95% CI 0.67-1.00). Among mothers who stopped working during the first/ second trimester of pregnancy, we found the same SGA risk for UFP; exposure to high strain also increased the risk (OR 1.81, 95% CI 1.18-2.83). Among those who stopped working during the third trimester, exposure to oxygenated solvents increased SGA risk (OR 2.24, 95% CI 1.08-4.41). In the linear model, for all women, there was a decrease in BW (β -34 grams, 95% CI -66--1.1) among those exposed to UFP. For mothers who stopped working during the first/second trimester, exposure to vibration increased BW, while among those who stopped working during the third trimester, exposure to night work increased BW. Exposure to oxygenated solvents decreased HC (β -0.22 cm, 95% CI -0.44-0.00) among all women. ConclusionThese findings suggest the possible influence of chemical and strenuous factors at work on fetal growth, particularly depending on the trimester in which pregnant mothers stopped working. While the combined assessment of multiple exposures did not reveal clear associations, further studies are needed to explore potential interactions and underlying biological mechanisms.
SN - 0355-3140
ER -