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      • Children's experience of the first lockdown in France
      • Early language socialisation
      • Role of grandparents after a birth
      • Growing up in a family of immigrant origin in France
      • Caring and sharing: who looks after baby?
      • Socioeconomic inequalities in language and motor development
      • Becoming the parents of a boy or girl
      • Low birth weight and socioeconomic characteristics
      • Preparing for the birth: what choices, what influences?
      • Children's games: a reflection of their socialisation?
      • The math performance gap between girls and boys is non-existent before the first year of primary school
      • Boys' or girls' games? The role of siblings!
      • Early schooling at age 2 narrow the gaps in child development?
      • Children with special educational needs
    • Health
      • Sleep habits and sleep characteristics at age one year in the ELFE birth cohort study
      • European LifeCycle Project: a network of cohorts totalling 250,000 children to improve public health
      • Elfe participe à la construction des nouvelles courbes de croissance du périmètre crânien
      • Respiratory symptoms at 2 months and 1 year
      • BCG vaccination before 3 months
      • Early prenatal interview and antenatal education
      • Tobacco and alcohol use during pregnancy in France: The role of migrant status
      • Psychological distress and access to mental healthcare during pregnancy
      • Infant feeding practices and sleep
      • Neurodevelopment of children: mothers' diet during pregnancy under the microscope
      • Allergy risk: the importance of not diversifying infant diets too late
      • Paternity leave and fathers' mental health
      • The microbiota of toddlers under the microscope!
      • Accidents of everyday life from 1 to 10.5 years old
      • Ophthalmological impairments at five and a half years after preterm birth
    • Environment
      • Levels of pyrethroid pesticides in pregnant women
      • Analysis of pesticides in hair samples from pregnant women
      • Absorption of environmental pollutants during pregnancy
      • Dietary exposure to pesticide residues
      • Exposure to microorganisms in the home
      • Impact of occupational exposure to solvents during pregnancy on fetal growth
    • Cross-cutting research
      • Infant formula : social and health related factors
      • Determinants of dietary diversification
      • Duration of breastfeeding in France
      • Breastfeeding practices
      • Children's health and inequalities: a report by the Cour des Comptes documented by data from the Elfe study
      • Children's exposure to screens: are families following the recommendations?
      • L'influence de la fratrie sur le développement du langage des enfants à 2 ans
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      • Enquête en ligne à 11 ou 12 ans
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      • newsletter 6
    • Le coin des enfants >
      • C’est quoi Elfe ?
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    • En coulisses >
      • From construction to a survey
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      • happy new year
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  • Main research themes

    Main research themes …
  • Videos >

    Videos > …
  • 10 years & 10 research advances

    10 years & 10 research advances It’s our 10th birthday! 2021 marks the midway point in France’s first longitudinal study of children from birth to adulthood. The Elfe study has already yielded a unique set of data on children living in France, enabling us …
  • Information leaflets

    Information leaflets Download the flyer Download the 4-pages leaflet …
  • Scientific Day 2025

    Scientific Day 2025 Scientific Day for the Elfe (French Longitudinal Study from Infancy onwards) and Epipage 2 (Epidemiological Study of Young Gestational Ages) studies. The Elfe and Epipage 2 teams are pleased to invite their members and partners to a …
  • A new survey at 14 years old is ongoing

    A new survey at 14 years old is ongoing Please note that this new survey at 14 years old is only conducted in French. The new survey at 14 years old is ongoing! At first only available for the parents of the study, teenagers now have access to their …
  • Elfe & Epipage 2: Call for expressions of interest in 2025

    Elfe & Epipage 2: Call for expressions of interest in 2025 Zoom sur l'image …
  • Wishes 2026

    Wishes 2026 …
  • C’est quoi Elfe ?

    C’est quoi Elfe ?   Comment t’avons-nous choisi ? À ta naissance, nous sommes allés rencontrer plein de mamans et de papas dans des hôpitaux à travers la France. Nous leur avons proposé de participer à l’étude Elfe avec leur bébé… et tes parents ont …
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