Iron‐fortified formula use in young children and association with socioeconomic factors in the French nationwide ELFE cohort: Iron--fortified formula use and socioeconomic factors

Anne-Sylvia Sacri 1, 2 Blandine de Lauzon-Guillain 3, * Marie-Noëlle Dufourg 4 Corinne Bois 4, 5 Marie Aline Charles 3 Martin Chalumeau 1, 2
* Corresponding author
1 CRESS - U1153 - Equipe 1 : EPOPé - Épidémiologie Obstétricale, Périnatale et Pédiatrique
UPD5 - Université Paris Descartes - Paris 5, CRESS (U1153 / UMR_A_1125 / UMR_S_1153) - Centre de Recherche Épidémiologie et Statistique Sorbonne Paris Cité
3 CRESS - U1153 - Equipe 6 : ORCHAD - Origines précoces de la santé du développement de l'enfant
UPD5 - Université Paris Descartes - Paris 5, CRESS (U1153 / UMR_A_1125 / UMR_S_1153) - Centre de Recherche Épidémiologie et Statistique Sorbonne Paris Cité
Abstract : AIM: To study the rate of iron-fortified infant formula (IFF) use in young children in France and its association with socioeconomic factors. METHODS: The ELFE national birth cohort included, in 2011, 18 329 living births in 349 hospitals randomly selected. The present analyses were restricted to children with follow-up at age two years. Milk consumption was evaluated by parental telephone interview, and its association with socioeconomic factors was studied. RESULTS: The 12 341 analysed children had a mean age of 26 months; 50% were girls. Rate of IFF use before two years old and at two years old was 65% and 43%, respectively. At age two years, use of IFF was lower with young age of the mother (adjusted OR [aOR] = 0.4, 95% CI: 0.3-0.5), low educational level (aOR = 0.7, 95% CI: 0.6-0.9), high parity (aOR = 0.3, 95% CI 0.2-0.4), and mother smoking (aOR = 0.8, 95% CI: 0.7-0.9) as well as low household income (aOR = 0.5, 95% CI: 0.4-0.7), and parents' unemployment (aOR = 0.7, 95% CI: 0.5-0.9). CONCLUSION: In this national population-based study, the rate of implementation of the ID prevention strategy was much lower at two years old than before two years old, and significantly lower in disadvantaged populations.
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Anne-Sylvia Sacri, Blandine de Lauzon-Guillain, Marie-Noëlle Dufourg, Corinne Bois, Marie Aline Charles, et al.. Iron‐fortified formula use in young children and association with socioeconomic factors in the French nationwide ELFE cohort: Iron--fortified formula use and socioeconomic factors. Acta Paediatrica, Wiley, 2018, Epub ahead of print. ⟨10.1111/apa.14682⟩. ⟨inserm-02093132⟩

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