Cohort Profile: The French national cohort of children (ELFE): birth to 5 years

Munier, Charles; Thierry, Xavier; Lanoé, Jean-Louis; Bois, C.; Dufourg, Marie‐Noëlle; Popa, Ruxandra; Cheminat, Marie; Zaros, Cécile; Geay, Bertrand

doi:10.1093/ije/dyz227

Cited by 135 publications

(124 citation statements)

References 22 publications

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“…This study used data from the ELFE ( Etude Longitudinale Française depuis l’Enfance ) cohort study. The ELFE study is a nationally representative birth cohort that follows 18,275 children born in France in 2011 (Charles et al, 2019). Children were recruited in 320 maternity wards using random sampling.…”

Section: Methodsmentioning

confidence: 99%

Informal and formal social support during pregnancy and joint maternal and paternal postnatal depression: Data from the French representative ELFE cohort study

Nakamura

Sutter-Dallay

El-Khoury

et al. 2020

Int J Soc Psychiatry

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Background: Insufficient social support has been intensively studied as a risk factor of postpartum depression (PPD) among mothers. However, to date, no study has examined the role of informal and formal dimensions of social support during pregnancy with regard to joint maternal and paternal depression after birth. Aim: Study associations between insufficient informal and formal support during pregnancy and joint parental PPD. Methods: Using data from the nationally representative French ELFE ( Etude Longitudinale Française depuis l’Enfance) cohort study ( N = 12,350), we estimated associations between insufficient informal and formal support received by the mother during pregnancy and joint parental PPD in multi-imputed multivariate multinomial regression models. Results: In 166 couples (1.3%), both parents were depressed. The likelihood of joint parental PPD was increased in case of insufficient informal support (insufficient partner support: odds ratio (OR) = 1.68 (95% confidence interval (CI): 1.57–1.80); frequent quarrels: OR = 1.38 (95% CI: 1.19–1.60)). We also observed associations between formal support during pregnancy and joint parental PPD (early prenatal psychosocial risk assessment: OR = 1.13 (95% CI: 1.05–1.22); antenatal education: OR = 1.13 (95% CI: 1.05–1.23)), which disappeared when analyses were restricted to women with no psychological difficulties during pregnancy. Conclusion: Insufficient informal social support during pregnancy appears to predict risk of joint PPD in mothers and fathers and should be identified early on to limit complications and the impact on children.

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Section: Methodsmentioning

confidence: 99%

Informal and formal social support during pregnancy and joint maternal and paternal postnatal depression: Data from the French representative ELFE cohort study

Nakamura

Sutter-Dallay

El-Khoury

et al. 2020

Int J Soc Psychiatry

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“…ELFE is a French national birth cohort, that consists of 18,040 mothers and 18,329 babies born in 2011 [21].…”

Section: Elfementioning

confidence: 99%

Measuring Child Socio-Economic Position in Birth Cohort Research: The Development of a Novel Standardized Household Income Indicator

Pizzi

Richiardi

Munier

et al. 2020

IJERPH

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The assessment of early life socioeconomic position (SEP) is essential to the tackling of social inequalities in health. Although different indicators capture different SEP dimensions, maternal education is often used as the only indicator in birth cohort research, especially in multi-cohort analyses. Household income, as a direct measure of material resources, is one of the most important indicators, but one that is underused because it is difficult to measure through questionnaires. We propose a method to construct a standardized, cross-cohort comparable income indicator, the “Equivalized Household Income Indicator (EHII)”, which measures the equivalized disposable household income, using external data from the pan-European Union Statistics on Income and Living Conditions (EUSILC) surveys, and data from the cohorts. We apply this method to four studies, Piccolipiù and NINFEA from Italy and ELFE and EDEN from France, comparing the distribution of EHII with other SEP-related variables available in the cohorts, and estimating the association between EHII and child body mass index (BMI). We found that basic parental and household characteristics may be used, with a fairly good performance, to predict the household income. We observed a strong correlation between EHII and both the self-reported income, whenever available, and other individual socioeconomic-related variables, and an inverse association with child BMI. EHII could contribute to improving research on social inequalities in health, in particular in the context of European birth cohort collaborative studies.

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“…The ELFE study (Etude Longitudinale Française depuis l’Enfance) is a multidisciplinary nationwide birth cohort including 18,329 children born in 2011 in a random sample of 349 maternity wards from mainland France [ 17 ]. The cohort aims at studying the determinants of child development, health and socialization from birth to adulthood.…”

Section: Methodsmentioning

confidence: 99%

Characterization of Infant Feeding Practices and Related-Family Characteristics in the French Nationwide ELFE Birth Cohort

et al. 2020

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Family characteristics such as education level or income are related to infant feeding practices. This study aimed to characterize infant feeding practices and investigate their associations with family characteristics. Analyses were performed with data from a French nationwide cohort, Etude Longitudinale Française depuis l’Enfance (ELFE). Feeding practices were characterized by two methods, a principal component analysis and a hierarchical ascendant classification (n = 8922). This characterization was conducted in three steps: considering firstly only introduction of main food groups, then also food pieces and finally adding the type of complementary food. The associations between family characteristics and the infant feeding patterns or clusters were tested by linear or multinomial regressions (n = 7556). Besides breastfeeding duration and age of first introduction of complementary foods, it appeared also important to consider specific food groups such as sweetened beverages and cow’s milk, and the introduction of food pieces, to describe feeding practices. Recommended feeding practices (longer breastfeeding, complementary food in the right period) were related to higher maternal age and education level, so was migration status, the presence of older children, low income or the mothers’ attendance to pre-birth preparation classes. The interrelations between feeding practices and family characteristics must be considered when examining the influence of feeding practices on child’s health.

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Cohort Profile: The French national cohort of children (ELFE): birth to 5 years

Cited by 135 publications

References 22 publications

Informal and formal social support during pregnancy and joint maternal and paternal postnatal depression: Data from the French representative ELFE cohort study

Informal and formal social support during pregnancy and joint maternal and paternal postnatal depression: Data from the French representative ELFE cohort study

Measuring Child Socio-Economic Position in Birth Cohort Research: The Development of a Novel Standardized Household Income Indicator

Characterization of Infant Feeding Practices and Related-Family Characteristics in the French Nationwide ELFE Birth Cohort

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